Fixes #5702 - CV index call now respects environment_id correctly
Merge pull request #4079 from parthaa/cv-index

Fixes # 5702 - Updated CV index call to work with environment_id
Fixes #5682 - Handle Lifecycle env read perms better

1) Made env index call prune the return list based on read perms
2) Made the env page in the UI display paths appropriately based on read
perms
3) Updated the create env call to require read access on the prior
environment before one can create.