Description of problem:
After upgrade ose from 1.2 to 2.0, ruby-1.8 app fail to do git push with the following error:
remote: /var/lib/openshift/529812ecf16d95099e0001fb/ruby//lib/util: line 36: /var/lib/openshift/529812ecf16d95099e0001fb/ruby//env/OPENSHIFT_RUBY_PATH_ELEMENT: Permission denied

After upgrade, create a new ruby-1.8 app, OPENSHIFT_RUBY_PATH_ELEMENT is generated in gear dir, so obviously ose-upgrade does not generate this ENV file during upgrade process.

Version-Release number of selected component (if applicable):
http://etherpad.corp.redhat.com/ose-2-0-upgrade-2013-12-04

How reproducible:
Always

Steps to Reproduce:
1. Setup ose-1.2 env
2. Create ruby-1.8 app on the node.
3. Upgrade env from 1.2 to 2.0
4. Git push for this app

Actual results:
Fail to git push.
$ git push
remote: Waiting for stop to finish
remote: Syncing git content to other proxy gears
remote: Saving away previously bundled RubyGems
remote: Building git ref 'master', commit 2d9d411
remote: /var/lib/openshift/529812ecf16d95099e0001fb/ruby//lib/util: line 36: /var/lib/openshift/529812ecf16d95099e0001fb/ruby//env/OPENSHIFT_RUBY_PATH_ELEMENT: Permission denied
remote: An error occurred executing 'gear postreceive' (exit code: 1)
remote: Error message: Failed to execute: 'control update-configuration' for /var/lib/openshift/529812ecf16d95099e0001fb/ruby
remote: 
remote: For more details about the problem, try running the command again with the '--trace' option.
To ssh://529812ecf16d95099e0001fb.com.cn/~/git/ruby18scal.git/
   9609dc1..2d9d411  master -> master


Expected results:
Git push succeed.

Additional info:
ruby-1.9 is working well.