NCL-2068
NCL-2068

When creating/updating envs, a check is made for uniqueness of names and imageid

project-ncl/pnc-cli,project-ncl/pnc-cli,janinko/pnc-cli,janinko/pnc-cli,janinko/pnc-cli,thauser/pnc-cli,project-ncl/pnc-cli,thauser/pnc-cli,thauser/pnc-cli