Also pass blacklisted hostnames

Workflows may need access to the list of blacklisted hostnames so they
can filter on that value. This change adds that input to the workflow
execution environment.

Change-Id: I41de32b324a406633699d17933ae05417b28c57b
Partial-Bug: #1743046

common/deploy-steps.j2

@@ -66,6 +66,10 @@ parameters:
     description: List of IP addresses belong to blacklisted servers
     type: comma_delimited_list
     default: []
+  blacklisted_hostnames:
+    description: List of hostnames belong to blacklisted servers
+    type: comma_delimited_list
+    default: []
 
 conditions:
 {% for step in range(1, deploy_steps_max) %}
@@ -178,6 +182,7 @@ resources:
                 {{r.name}}: {get_param: [role_data, {{r.name}}, merged_config_settings]}
                 {%- endfor %}
               blacklisted_ip_addresses: {get_param: blacklisted_ip_addresses}
+              blacklisted_hostnames: {get_param: blacklisted_hostnames}
             evaluate_env: false
         UPDATE:
           workflow: { get_resource: WorkflowTasks_Step{{step}} }
@@ -189,6 +194,7 @@ resources:
                 {{r.name}}: {get_param: [role_data, {{r.name}}, merged_config_settings]}
                 {%- endfor %}
               blacklisted_ip_addresses: {get_param: blacklisted_ip_addresses}
+              blacklisted_hostnames: {get_param: blacklisted_hostnames}
             evaluate_env: false
       always_update: true
 # END workflow_tasks handling

overcloud.j2.yaml

@@ -859,6 +859,15 @@ resources:
           - {get_attr: [{{role.name}}, blacklist_ip_address]}
 {% endfor %}
 
+  BlacklistedHostnames:
+    type: OS::Heat::Value
+    properties:
+      value:
+        list_concat:
+{% for role in roles %}
+          - {get_attr: [{{role.name}}, blacklist_hostname]}
+{% endfor %}
+
   # Post deployment steps for all roles
   AllNodesDeploySteps:
     type: OS::TripleO::PostDeploySteps
@@ -894,6 +903,7 @@ resources:
           - {get_attr: [{{role.name}}MergedConfigSettings, value]}
 {% endfor %}
       blacklisted_ip_addresses: {get_attr: [BlacklistedIpAddresses, value]}
+      blacklisted_hostnames: {get_attr: [BlacklistedHostnames, value]}
 
   ServerOsCollectConfigData:
     type: OS::Heat::Value

puppet/role.role.j2.yaml

@@ -646,6 +646,13 @@ outputs:
         - server_blacklisted
         - {get_attr: [{{server_resource_name}}, networks, ctlplane, 0]}
         - ""
+  blacklist_hostname:
+    description: Hostname of the server if the server is blacklisted, otherwise this output will be an empty string
+    value:
+      if:
+        - server_blacklisted
+        - {get_attr: [{{server_resource_name}}, name]}
+        - ""
   hostname:
     description: Hostname of the server
     value: {get_attr: [{{server_resource_name}}, name]}