Remove python 2.7-community

Directory changes:
versions/shared/bin => versions/3.3/bin
versions/2.7        => REMOVED

Card online_runtime_156 - Python 2.7 from SCL [cart]
https://trello.com/c/IUo215zy
Enable python27 SCL functionality

Directory changes:
versions/2.7    => REMOVED
versions/3.3    => versions/3.3-community
versions/native => versions/{2.6,2.7,2.7-scl}

Add python_context script for both RHEL and Fedora.

Card online_runtime_156 - Python 2.7 from SCL [cart]
https://trello.com/c/IUo215zy
Make python update-configuration compatible with scl

Remove wait_for_stop from lib/util, as it's already provided by the cartridge sdk.

Card online_runtime_156 - Python 2.7 from SCL [cart]
https://trello.com/c/IUo215zy
PULL_2005 added tests for adding supplementary groups when creating new gears in a node
PULL_2005 fixed code review bugs for adding supplementary groups to new gears
PULL_2005 Changed GEAR_SUPL_GRPS to GEAR_SUPPLEMENTARY_GROUPS in node and tests
Bug 977563

Instead of using glob, explicitly list templates belonging to the Ruby
cartridge.
node-util: Fixing undefined local variable due to typo
Fix mysql scaling tests
Avoid harmless but annoying deprecation warning
Move core migration into origin-server

Move unit tests from li to origin-server
Move migrate_action into openshift agent, move cuke tests
Rename rhc-admin-migrate to oo-admin-migrate and move into origin-server

Trello: https://trello.com/c/1KV8NmDJ (runtime_319)
Bug 977950 - Copying the v1 descriptions back into the v2 versions of the cartridge.
Bug 979134 - the v1 cart version check was matching older versions of the v2 cart and is no longer necessary.