Description of problem:
create one app and reset the env variable 'OPENSHIFT_SECRET_TOKEN', after do that, the OPENSHIFT_SECRET_TOKEN has been changed, but in mongo the value 'secret_token' did not change.

Version-Release number of selected component (if applicable):
devenv_3816

How reproducible:
always

Steps to Reproduce:
1. create one any type app
2. reset the value of env variable OPENSHIFT_SECRET_TOKEN
    rhc env set OPENSHIFT_SECRET_TOKEN=hello -a $app
3. rhc ssh -a $app --gear env |grep -i variable OPENSHIFT_SECRET_TOKEN
4. check mongo db

Actual results:

step 3: OPENSHIFT_SECRET_TOKEN=hello
step 4: the value of secret_token did not change
"secret_token" "g1F41sFyHjLOZnM8_122BnkpL1Wds4RaRw2zv4Lidv1tcvtUr3VHrrh5Ym9SDxXFxxsEbSOK3R2XjUv4B8MdPZsIVXdfUOz6zHqCJGBsOmhm_jYJ_Hz-pxkLYyYXzJa-"

Expected results:
the value of 'secret_token' in mongo should be also changed and keep consistent with OPENSHIFT_SECRET_TOKEN

Additional info: