rbac: rbacutil need to handle creation of global-acl

[shajuvk]

creation of global ACL failing, since the ACL entries already present.

root@a5s7:/opt/contrail/utils# python rbacutil.py --name "default-global-system-config:default-api-access-list" --rule "virtual-network _member_:R" --op create
Rbac is enabled

Oper = create
Name = ['default-global-system-config', 'default-api-access-list']
UUID = None
API Server = 127.0.0.1:8082

Traceback (most recent call last):
  File "rbacutil.py", line 302, in <module>
    pobj = vnc.domain_read(fq_name = fq_name[0:1])
  File "/usr/lib/python2.7/dist-packages/vnc_api/vnc_api.py", line 39, in wrapper
    return func(self, *args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/vnc_api/vnc_api.py", line 399, in _object_read
    res_type, fq_name, fq_name_str, id, ifmap_id)
  File "/usr/lib/python2.7/dist-packages/vnc_api/vnc_api.py", line 692, in _read_args_to_id
    return (True, self.fq_name_to_id(res_type, fq_name))
  File "/usr/lib/python2.7/dist-packages/vnc_api/vnc_api.py", line 39, in wrapper
    return func(self, *args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/vnc_api/vnc_api.py", line 902, in fq_name_to_id
    content = self._request_server(rest.OP_POST, uri, data=json_body)
  File "/usr/lib/python2.7/dist-packages/vnc_api/vnc_api.py", line 706, in _request_server
    retry_count=retry_count)
  File "/usr/lib/python2.7/dist-packages/vnc_api/vnc_api.py", line 747, in _request
    % (op, url, data, content))
cfgm_common.exceptions.NoIdError: Unknown id: Error: oper 1 url /fqname-to-id body {"fq_name": ["default-global-system-config"], "type": "domain"} response Name ['default-global-system-config'] not found
root@a5s7:/opt/contrail/utils# python rbacutil.py --name "default-global-system-config:default-api-access-list" --rule "virtual-network _member_:R" --op read
Rbac is enabled

Oper = read
Name = ['default-global-system-config', 'default-api-access-list']
UUID = None
API Server = 127.0.0.1:8082

Rules (3):
----------
 1 fqname-to-id *:CRUD,
 2 id-to-fqname *:CRUD,
 3 documentation *:R,

root@a5s7:/opt/contrail/utils#

[Deepinder Setia (dsetia)]

Fixed by https://review.opencontrail.org/#/c/22683/