tempest-R5.0.1: Security group rule- protocol 'esp' not supported as protocol value

[shajuvk]

Testcase to run :

cd /home/stack/tempest

sudo ostestr --pdb neutron_tempest_plugin.api.test_security_groups.SecGroupProtocolTest.test_create_show_delete_security_group_rule_names

Error:

   Details: {u'message': u"Security group rule protocol esp not supported. Only protocol values [u'any', u'tcp', u'udp', u'icmp'] and integer representations [0 to 255] are supported.", u'type': u'SecurityGroupRuleInva
lidProtocol', u'detail': u''}

====

Body: {"security_group_rule": {"ethertype": "IPv4", "direction": "ingress", "protocol": "esp", "security_group_id": "718e2b5d-0a68-46f2-ba1d-c613fe2deeca"}}

Response - Headers: {'status': '400', u'content-length': '247', 'content-location': 'http://172.20.3.29:9696/v2.0/security-group-rules', u'date': 'Thu, 06 Dec 2018 19:36:34 GMT', u'content-type': 'application/json', u'connection': 'close', u'x-openstack-request-id': 'req-9e373e0f-fb7c-4375-aa62-ff94758aff51'}

Body: {"NeutronError": {"message": "Security group rule protocol esp not supported. Only protocol values [u'any', u'tcp', u'udp', u'icmp'] and integer representations [0 to 255] are supported.", "type": "SecurityGroupRuleInvalidProtocol", "detail": ""}}