Enable Ansible error handling per role

Enable any_errors_fatal and max_fail_percentage Ansible options
to be set per TripleO role.  This change also provides a
structure by which future per-role Ansible options can readily
be added to group_vars.

Closes-Bug: 1760989
Change-Id: I47954717f42f14bae8d9fd2bd17cd8ea1fd787b3

overcloud.j2.yaml

@@ -1011,6 +1011,13 @@ outputs:
     value:
 {% for role in roles %}
       {{role.name}}: {get_attr: [{{role.name}}IpListMap, net_ip_map]}
+{% endfor %}
+  RoleGroupVars:
+    description: Mapping of roles to ansible group_vars to be applied config in those roles
+    value:
+{% for role in roles %}
+      {{role.name}}:
+        map_merge: {get_attr: [{{role.name}}, role_group_vars]}
 {% endfor %}
   RoleNetHostnameMap:
     description: Mapping of each network to a list of hostnames for each role

puppet/role.role.j2.yaml

@@ -236,6 +236,14 @@ parameters:
     description: |
       Name of the subnet on ctlplane network for this role.
     type: string
+  {{role.name}}AnyErrorsFatal:
+    default: yes
+    type: string
+  {#- We generally won't want any failures on HA Controller roles, 15% will cause any 1 node to fail the deploy, #}
+  {#- for a 3 or 5 node Role, making it a fairly safe default. #}
+  {{role.name}}MaxFailPercentage:
+    default: 15
+    type: number
 
 {% if role.uses_deprecated_params|default(false) %}
 parameter_groups:
@@ -754,3 +762,7 @@ outputs:
     description: IP address of the server in the {{network.name}} network
     value: {get_attr: [{{network.name}}Port, ip_address]}
   {%- endfor %}
+  role_group_vars:
+    value:
+      any_errors_fatal: {get_param: {{role.name}}AnyErrorsFatal}
+      max_fail_percentage: {get_param: {{role.name}}MaxFailPercentage}