admin utility enabled nsx-update for security groups (V and T)

Provide ability to update security groups on NSX

Change-Id: Ia16dfcd5618a3584bc9d0acfbf8a0de155997e58

doc/source/admin_util.rst

@@ -219,7 +219,7 @@ Security Groups, Firewall and Spoofguard
 
     nsxadmin --resource security-groups --operation list
     nsxadmin -r nsx-security-groups -o {list, list-missmatches}
-    nsxadmin -r firewall-sections -o {list, list-missmatches}
+    nsxadmin -r firewall-sections -o {list, list-missmatches, nsx-update}
 
 - Spoofguard support::
 

vmware_nsx/shell/admin/plugins/nsxv/resources/securitygroups.py

@@ -95,7 +95,7 @@ class NeutronSecurityGroupDB(
         return False
 
     def delete_security_group_section_mapping(self, sg_id):
-        with self.db_api.context_manager.writer.using(self.context):
+        with db_api.context_manager.writer.using(self.context):
             fw_mapping = self.context.session.query(
                 nsxv_models.NsxvSecurityGroupSectionMapping).filter_by(
                     neutron_id=sg_id).one_or_none()
@@ -433,6 +433,10 @@ registry.subscribe(reorder_firewall_sections,
                    constants.FIREWALL_SECTIONS,
                    shell.Operations.NSX_REORDER.value)
 
+registry.subscribe(fix_security_groups,
+                   constants.FIREWALL_SECTIONS,
+                   shell.Operations.NSX_UPDATE.value)
+
 registry.subscribe(firewall_update_cluster_default_fw_section,
                    constants.FIREWALL_SECTIONS,
                    shell.Operations.NSX_UPDATE.value)

vmware_nsx/shell/admin/plugins/nsxv3/resources/securitygroups.py

@@ -300,3 +300,7 @@ def migrate_nsgroups_to_dynamic_criteria(resource, event, trigger, **kwargs):
 registry.subscribe(migrate_nsgroups_to_dynamic_criteria,
                    constants.FIREWALL_NSX_GROUPS,
                    shell.Operations.MIGRATE_TO_DYNAMIC_CRITERIA.value)
+
+registry.subscribe(fix_security_groups,
+                   constants.FIREWALL_SECTIONS,
+                   shell.Operations.NSX_UPDATE.value)