Install pip package on the common role

Several issues on various Puppet modules where it doesn't install
pip dependency, rather install this in the common role upfront.

roles/bootstrap_puppet_infra_node/tasks/main.yml

@@ -19,8 +19,5 @@
 - name: Enable puppet agent, as it is disabled upon installation
   command: puppet agent --enable
 
-- name: Install pip from Ubuntu (some classes do not install it properly)
-  apt: name=python-pip
-
 - name: Run puppet agent to apply configuration
   puppet:

roles/common/tasks/main.yml

@@ -3,4 +3,7 @@
   apt: update_cache=yes
 
 - name: Install git package
-  apt: name=git
+  apt: name={{ item }} state=installed
+  with_items:
+    - git
+    - python-pip