Comma in member attribute will cause parsing error in CLI and UI.

1. In CLI the values of member attribute have to be joined with a comma and specified in a parameter. A single value that contains comma will be incorrectly parsed into multiple values.

Add the following role and privileges:

% ipa role-add "Test Role" --desc="Test Role"
% ipa privilege-add "Test Privilege" --desc="Test Privilege"
% ipa privilege-add "Write, Add and Delete Members" --desc="Test Privilege"

Add the privileges into the role:

% ipa role-add-privilege "Test Role" --privileges="Write, Add and Delete Members, Test Privilege"
  Role name: test role
  Description: Test Role
  Privileges: test privilege
  Failed members:
    privilege: write: privilege not found
    privilege: add and delete members: privilege not found

To solve this problem there needs to be a way to escape the comma.

1. In UI the values of member attribute have to be joined with a comma and sent as a single string value. A single value that contains comma will be incorrectly parsed into multiple values.

   {
   "method": "role_add_privilege",
   "params": [
   [ "Test Role" ],
   {
   "privilege": "Write, Add and Delete Members, Test Privilege"
   }
   ]
   }

To solve this the problem the values should be sent as an array. Currently the server doesn't accept array in member attribute.

{
    "method": "role_add_privilege",
    "params": [
        [ "Test Role" ],
        {
            "privilege": [ "Write, Add and Delete Members", "Test Privilege" ]
        }
    ]
}