Fix a bug in the git module: branches might not check out properly

Cherry-picked from master.

If a git version is specified as a branch, and the commit referred to is
already on the local working tree, but the branch is not, then the
checkout will fail.

This is because the Ansible 1.9.3 module would check to see if the
commit was already present, and if so, did not fetch. This meant the
branch wasn't defined in the local working tree.

This can happen if you make a branch but there aren't any changes on the
branch.

playbooks/edx-east/legacy_certificates.yml

@@ -14,7 +14,7 @@
     - name: stop certs service
       service: name="certificates" state="stopped"
     - name: checkout code
-      git: >
+      git_2_0_1: >
         repo="{{ repo_url }}"
         dest="{{ repo_path }}"
         version="{{ certificates_version }}"

playbooks/roles/alton/tasks/deploy.yml

@@ -15,7 +15,7 @@
   notify: restart alton
 
 - name: checkout the code
-  git: >
+  git_2_0_1: >
     dest="{{ alton_code_dir }}" repo="{{ alton_source_repo }}"
     version="{{ alton_version }}" accept_hostkey=yes
   sudo_user: "{{ alton_user }}"

playbooks/roles/analytics_pipeline/tasks/main.yml

@@ -83,7 +83,7 @@
     - install:configuration
 
 - name: util library source checked out
-  git: >
+  git_2_0_1: >
     dest={{ analytics_pipeline_util_library.path }} repo={{ analytics_pipeline_util_library.repo }}
     version={{ analytics_pipeline_util_library.version }}
   tags:

playbooks/roles/certs/tasks/deploy.yml

@@ -41,7 +41,7 @@
   when: CERTS_GIT_IDENTITY != "none"
 
 - name: checkout certificates repo into {{ certs_code_dir }}
-  git: >
+  git_2_0_1: >
     dest={{ certs_code_dir }} repo={{ CERTS_REPO }} version={{ certs_version }}
     accept_hostkey=yes
   sudo_user: "{{ certs_user }}"
@@ -51,7 +51,7 @@
   when: CERTS_GIT_IDENTITY != "none"
 
 - name: checkout certificates repo into {{ certs_code_dir }}
-  git: >
+  git_2_0_1: >
     dest={{ certs_code_dir }} repo={{ CERTS_REPO }} version={{ certs_version }}
     accept_hostkey=yes
   sudo_user: "{{ certs_user }}"

playbooks/roles/demo/tasks/deploy.yml

 ---
 
 - name: check out the demo course
-  git: >
+  git_2_0_1: >
     dest={{ demo_code_dir }}  repo={{ demo_repo }} version={{ demo_version }}
     accept_hostkey=yes
   sudo_user: "{{ demo_edxapp_user }}"

playbooks/roles/edx_ansible/tasks/deploy.yml

 ---
 - name: git checkout edx_ansible repo into edx_ansible_code_dir
-  git: >
+  git_2_0_1: >
     dest={{ edx_ansible_code_dir }} repo={{ edx_ansible_source_repo }} version={{ configuration_version }}
     accept_hostkey=yes
   sudo_user: "{{ edx_ansible_user }}"

playbooks/roles/edx_service/tasks/main.yml

@@ -163,7 +163,7 @@
     - install:code
 
 - name: checkout code over ssh
-  git: >
+  git_2_0_1: >
     repo=git@{{ item.DOMAIN }}:{{ item.PATH }}/{{ item.REPO }}
     dest={{ item.DESTINATION }}  version={{ item.VERSION }}
     accept_hostkey=yes key_file={{ edx_service_home }}/.ssh/{{ item.REPO }}
@@ -176,7 +176,7 @@
     - install:code
 
 - name: checkout code over https
-  git: >
+  git_2_0_1: >
     repo=https://{{ item.DOMAIN }}/{{ item.PATH }}/{{ item.REPO }}
     dest={{ item.DESTINATION }}  version={{ item.VERSION }}
   sudo_user: "{{ edx_service_user }}"

playbooks/roles/edxapp/tasks/deploy.yml

@@ -52,7 +52,7 @@
 
 # Do A Checkout
 - name: checkout edx-platform repo into {{ edxapp_code_dir }}
-  git: >
+  git_2_0_1: >
     dest={{ edxapp_code_dir }}
     repo={{ edx_platform_repo }}
     version={{ edx_platform_version }}
@@ -73,7 +73,7 @@
     - install:code
 
 - name: checkout theme
-  git: >
+  git_2_0_1: >
     dest={{ edxapp_app_dir }}/themes/{{ edxapp_theme_name }}
     repo={{ edxapp_theme_source_repo }}
     version={{ edxapp_theme_version }}

playbooks/roles/forum/tasks/deploy.yml

@@ -39,7 +39,7 @@
     - install:configuration
 
 - name:  git checkout forum repo into {{ forum_code_dir }}
-  git: >
+  git_2_0_1: >
     dest={{ forum_code_dir }} repo={{ forum_source_repo }} version={{ forum_version }}
     accept_hostkey=yes
   sudo_user: "{{ forum_user }}"

playbooks/roles/gitreload/tasks/course_pull.yml

 # Tasks to run if cloning repos to edx-platform.
 
 - name: clone all course repos
-  git: dest={{ GITRELOAD_REPODIR }}/{{ item.name }} repo={{ item.url }} version={{ item.commit }}
+  git_2_0_1: dest={{ GITRELOAD_REPODIR }}/{{ item.name }} repo={{ item.url }} version={{ item.commit }}
   sudo_user: "{{ common_web_user }}"
   with_items: GITRELOAD_REPOS
 

playbooks/roles/harprofiler/tasks/main.yml

@@ -14,7 +14,7 @@
     mode=0755
 
 - name: check out the harprofiler
-  git: >
+  git_2_0_1: >
     dest={{ harprofiler_dir }}
     repo={{ harprofiler_github_url }} version={{ harprofiler_version }}
     accept_hostkey=yes

playbooks/roles/jenkins_worker/tasks/python_platform_worker.yml

@@ -6,7 +6,7 @@
 # refers to the --depth-setting of git clone. A value of 1
 # will truncate all history prior to the last revision.
 - name: Create shallow clone of edx-platform
-  git: >
+  git_2_0_1: >
     repo=https://github.com/edx/edx-platform.git
     dest={{ jenkins_home }}/shallow-clone
     version=master

playbooks/roles/notifier/tasks/deploy.yml

 ---
 
 - name: checkout code
-  git:
+  git_2_0_1:
     dest={{ NOTIFIER_CODE_DIR }} repo={{ NOTIFIER_SOURCE_REPO }}
     version={{ NOTIFIER_VERSION }}
     accept_hostkey=yes
@@ -31,7 +31,7 @@
   when: NOTIFIER_GIT_IDENTITY != ""
 
 - name: checkout theme
-  git: >
+  git_2_0_1: >
     dest={{ NOTIFIER_CODE_DIR }}/{{ NOTIFIER_THEME_NAME }}
     repo={{ NOTIFIER_THEME_REPO }}
     version={{ NOTIFIER_THEME_VERSION }}

playbooks/roles/rbenv/tasks/main.yml

@@ -59,7 +59,7 @@
     - install:base
 
 - name: update rbenv repo
-  git: >
+  git_2_0_1: >
     repo=https://github.com/sstephenson/rbenv.git
     dest={{ rbenv_dir }}/.rbenv version={{ rbenv_version }}
     accept_hostkey=yes

playbooks/roles/test_build_server/tasks/main.yml

@@ -21,7 +21,7 @@
 #
 
 - name: Create clone of edx-platform
-  git: >
+  git_2_0_1: >
     repo=https://github.com/edx/edx-platform.git
     dest={{ test_build_server_repo_path }}/edx-platform-clone
     version={{ test_edx_platform_version }}

playbooks/roles/xqueue/tasks/deploy.yml

@@ -43,7 +43,7 @@
 
 # Do A Checkout
 - name: git checkout xqueue repo into xqueue_code_dir
-  git: >
+  git_2_0_1: >
     dest={{ xqueue_code_dir }} repo={{ xqueue_source_repo }} version={{ xqueue_version }}
     accept_hostkey=yes
   sudo_user: "{{ xqueue_user }}"

playbooks/roles/xqwatcher/tasks/deploy_courses.yml

@@ -3,7 +3,7 @@
 # a per queue basis.
 
 - name: checkout grader code
-  git: >
+  git_2_0_1: >
     dest={{ xqwatcher_app_dir }}/data/{{ item.COURSE }} repo={{ item.GIT_REPO }}
     version={{ item.GIT_REF }}
     ssh_opts="{{ xqwatcher_course_git_ssh_opts }}"

playbooks/roles/xserver/tasks/deploy.yml

@@ -19,7 +19,7 @@
     - restart xserver
 
 - name: checkout code
-  git: >
+  git_2_0_1: >
     dest={{ xserver_code_dir }} repo={{ xserver_source_repo }} version={{xserver_version}}
     accept_hostkey=yes
   sudo_user: "{{ xserver_user }}"
@@ -58,7 +58,7 @@
   notify: restart xserver
 
 - name: checkout grader code
-  git: >
+  git_2_0_1: >
     dest={{ XSERVER_GRADER_DIR }} repo={{ XSERVER_GRADER_SOURCE }} version={{ xserver_grader_version }}
     accept_hostkey=yes
   environment:

playbooks/roles/xsy/tasks/main.yml

@@ -42,7 +42,7 @@
   notify: restart xsy
 
 - name: checkout the code
-  git: >
+  git_2_0_1: >
     dest="{{ xsy_code_dir }}" repo="{{ xsy_source_repo }}"
     version="{{ xsy_version }}" accept_hostkey=yes
   sudo_user: "{{ xsy_user }}"