Description of problem:
now we doesn't support removing  cartridge without specifying cartridge version
rhc app cartridge remove -a qphp -c mongodb --confirm
But we could control cartridges by cartridge type without version like:
rhc app cartridge add -a qphp -c mongodb
rhc app cartridge status -a qphp -c mongodb
rhc app cartridge start -a qphp -c mongodb
rhc app cartridge stop -a qphp -c mongodb
rhc app cartridge restart -a qphp -c mongodb
rhc app cartridge reload -a qphp -c mongodb

Version-Release number of selected component (if applicable):
devenv_2304
client: build from fork_ami_US2597_US2599_US2813_US2817_US2872_US2816_US2814_213 (ami-28ee5141)

How reproducible:
always


Steps to Reproduce:
1.Create app and embed cartridge like mongodb
2.rhc app cartridge remove -a qphp -c mongodb --confirm
3.
  
Actual results:
[qgong@localhost dev]$ rhc cartridge remove -a qruby19 -c mongodb --confirm
Password: 

Cartridge mongodb can't be found in application qruby19.

Valid cartridges:
mongodb-2.2

Expected results:
could remove mongodb without version, like:

rhc cartridge remove -a qruby19 -c mongodb --confirm

Additional info: