Adding action based authorization for keypairs.

Added support for action-based policy to keypairs extensions.
Added the same for v3.
Fixes LP 1194739
Change-Id: Ie2a6f7b98845e0789f25c6fd0b97e119d5302046
Merge "Adding action based authorization for keypairs."
Merge remote-tracking branch 'm_src_repo/citrix-fixes' into build-temp