New test cases for blacklist test suite

1) test_create_blacklist_as_primary_fails
   Primary user is not allowed to create blacklist.
2) test_primary_fails_to_create_zone_matches_blacklist_regex
   Zone is failed to be created if its name matches existing
   blacklist regex.
3) test_primary_fails_to_create_zone_matches_blacklist_name
   Zone is failed to be created if its name is in blacklist.
4) test_admin_creates_zone_matches_blacklist_name_or_regex
   Users with the Admin role bypass the deny list check.
5) test_create_blacklist_invalid_pattern
   Create blacklist using invalid patterns.
6) test_create_blacklist_huge_size_description
   Create blacklist using huge size description string.

Change-Id: I6e924d5ba9b411b427e9eed358a90e9ece56156d
3 files changed