Fix endpoint creational in ironic

The openstack command, when an endpoint is checked directly
returns a code of 1 if no endpoint is found. This by default
for ansible is a failure, and causes the task to fail, however
we check for the return code later. We should ignore the errors
upon these information gathering tasks being executed.

Change-Id: I4cb7eb2878f1495a17821b895765093205f43c98

playbooks/roles/bifrost-ironic-install/tasks/keystone_setup.yml

@@ -118,6 +118,7 @@
     --region "{{ keystone.bootstrap.region_name | default('RegionOne') }}"
   no_log: true
   register: test_ironic_admin_endpoint
+  ignore_errors: true
 
 - name: "Check ironic public endpoint exists"
   command: |
@@ -131,6 +132,7 @@
     --region "{{ keystone.bootstrap.region_name | default('RegionOne') }}"
   no_log: true
   register: test_ironic_public_endpoint
+  ignore_errors: true
 
 - name: "Check ironic internal endpoint exists"
   command: |
@@ -144,6 +146,7 @@
     --region "{{ keystone.bootstrap.region_name | default('RegionOne') }}"
   no_log: true
   register: test_ironic_internal_endpoint
+  ignore_errors: true
 
 - name: "Create ironic admin endpoint"
   command: |