Merge pull request #2212 from edx/feanil/upgrade_python

OPS-631: Upgrade to the latest version of python

playbooks/roles/common/defaults/main.yml

@@ -3,4 +3,4 @@
 # Common variables are defined in the common_vars role on which this
 # role depends.  This is to allow sharing vars without creating
 # side-effects.  Any vars requred by this role should be added to
-# common_vars/defaults/main.yml
\ No newline at end of file
+# common_vars/defaults/main.yml

playbooks/roles/common/tasks/main.yml

@@ -22,6 +22,10 @@
   apt_repository: 
     repo: "{{ common_git_ppa }}"
 
+# Ensure that we get the latest version of python 2.7
+- name: Add python 2.7 apt repository
+  apt_repository: repo="{{ common_python_ppa }}"
+
 - name: Install role-independent useful system packages
   # do this before log dir setup; rsyslog package guarantees syslog user present
   apt:
@@ -97,4 +101,3 @@
   notify: 
     - restart ssh
     - restart rsyslogd
-  
\ No newline at end of file

playbooks/roles/common_vars/defaults/main.yml

@@ -98,7 +98,7 @@ common_debian_pkgs:
   - tree
   - git
   - unzip
-  - python2.7
+  - "python2.7=2.7.10-0+precise1"
   - python-pip
   - python2.7-dev
   # Not installed by default on vagrant ubuntu
@@ -116,6 +116,7 @@ common_web_group: www-data
 common_log_user: syslog
 
 common_git_ppa: "ppa:git-core/ppa"
+common_python_ppa: "ppa:fkrull/deadsnakes-python2.7"
 
 # Skip supervisor tasks
 # When set to true this flag will allow you to install everything but keep