Updated the Credentials Service to use Python 3.5

ECOM-7552

playbooks/roles/credentials/defaults/main.yml

@@ -235,10 +235,6 @@ credentials_gunicorn_timeout: 300
 
 credentials_log_dir: "{{ COMMON_LOG_DIR }}/{{ credentials_service_name }}"
 
-credentials_requirements_base: "{{ credentials_code_dir }}/requirements"
-credentials_requirements:
-  - production.txt
-
 #
 # OS packages
 #

playbooks/roles/credentials/tasks/main.yml

@@ -30,17 +30,42 @@
     - install
     - install:configuration
 
-- name: install application requirements
+- name: add deadsnakes repository
+  apt_repository:
+    repo: "ppa:fkrull/deadsnakes"
+  tags:
+    - install
+    - install:system-requirements
+
+- name: install python3.5
+  apt:
+    name: "{{ item }}"
+  with_items:
+    - python3.5
+    - python3.5-dev
+  tags:
+    - install
+    - install:system-requirements
+
+- name: build virtualenv
+  command: "virtualenv --python=python3.5 {{ credentials_venv_dir }}"
+  args:
+    creates: "{{ credentials_venv_dir }}/bin/pip"
+  become_user: "{{ credentials_user }}"
+  tags:
+    - install
+    - install:system-requirements
+
+- name: install nodenv
   pip:
-    requirements: "{{ credentials_requirements_base }}/{{ item }}"
-    # Ansible will initialize this virtualenv if it's missing.
-    virtualenv: "{{ credentials_venv_dir }}"
-    state: present
+    name: "nodeenv"
+    version: "1.1.2"
+    # NOTE (CCB): Using the "virtualenv" option here doesn't seem to work.
+    executable: "{{ credentials_venv_dir }}/bin/pip"
   become_user: "{{ credentials_user }}"
-  with_items: "{{ credentials_requirements }}"
   tags:
     - install
-    - install:app-requirements
+    - install:system-requirements
 
 - name: create nodeenv
   shell: "{{ credentials_venv_dir }}/bin/nodeenv {{ credentials_nodeenv_dir }} --node={{ credentials_node_version }} --prebuilt --force"
@@ -49,6 +74,16 @@
     - install
     - install:system-requirements
 
+- name: install application requirements
+  command: make production-requirements
+  args:
+    chdir: "{{ credentials_code_dir }}"
+  become_user: "{{ credentials_user }}"
+  environment: "{{ credentials_environment }}"
+  tags:
+    - install
+    - install:app-requirements
+
 - name: install development requirements
   command: make requirements
   args: