Description of problem:
the CLI : ipa delegation-add allows
--permissions=STR  Comma-separated list of permissions to grant (read,
                     write). Default is write.
But this is not available in UI

Version-Release number of selected component (if applicable):
ipa-server-2.2.0-8.el6.x86_64

How reproducible:
always

Steps to Reproduce:
1. Add a new Delegation


Actual results:
Cannot specify permission

Expected results:
To be able to specify permission

Additional info: