Add new ansible tag for network configuration

This seprates the overcloud network configuration as a separate
play and adds a new tag 'network_deploy_steps' so that it can be
executed alone using '--tags network_deploy_steps'.

Change-Id: I96b0d838e79bcaa8b08ffaa2fb745ee7003d1284

common/deploy-steps.j2

@@ -532,32 +532,20 @@ outputs:
 
             - hosts: {{primary_role_name}}:DEPLOY_TARGET_HOST
               strategy: tripleo_free
-              name: Server deployments
+              name: Server network deployments
               gather_facts: "{% raw %}{{ gather_facts | default(false) }}{% endraw %}"
               any_errors_fatal: yes
               tasks:
 {% raw %}
-                - name: Server deployments
-                  delegate_to: localhost
-                  run_once: true
-                  debug:
-                    msg: Use --start-at-task 'Server deployments' to resume from this task
-                - include_tasks: deployments.yaml
-                  vars:
-                    force: false
-                  with_items: "{{ hostvars[inventory_hostname]['pre_deployments_' ~ tripleo_role_name]|default([]) }}"
-
                 - name: Check NetworkConfig script existence
                   local_action:
                     module: stat
                     path: "{{ lookup('first_found', NetworkConfig_paths, errors='ignore') }}"
-                  become: no
                   register: NetworkConfig_stat
                   vars:
                       NetworkConfig_paths:
                         - "{{ tripleo_role_name ~ '/' ~ inventory_hostname ~ '/NetworkConfig' }}"
                         - "{{ tripleo_role_name ~ '/NetworkConfig' }}"
-
                 - name: Run Network Config
                   import_role:
                     name: tripleo_network_config
@@ -571,7 +559,6 @@ outputs:
                     tripleo_network_config_async_poll: "{{ async_poll | default(3) }}"
                   when:
                     - NetworkConfig_stat.stat.exists
-
                 - name: AllNodesValidationConfig
                   script: all_nodes_validation_script.sh
                   environment:
@@ -580,12 +567,32 @@ outputs:
                     validate_fqdn: "{{ validate_fqdn }}"
                     ping_test_ips: "{{ ping_test_ips | to_json }}"
                     tripleo_role_name: "{{ tripleo_role_name }}"
+              tags:
+                - overcloud
+                - pre_deploy_steps
+                - network_deploy_steps
+{% endraw %}
 
+            - hosts: {{primary_role_name}}:DEPLOY_TARGET_HOST
+              strategy: tripleo_free
+              name: Server deployments
+              gather_facts: "{% raw %}{{ gather_facts | default(false) }}{% endraw %}"
+              any_errors_fatal: yes
+              tasks:
+{% raw %}
+                - name: Server deployments
+                  delegate_to: localhost
+                  run_once: true
+                  debug:
+                    msg: Use --start-at-task 'Server deployments' to resume from this task
+                - include_tasks: deployments.yaml
+                  vars:
+                    force: false
+                  with_items: "{{ hostvars[inventory_hostname]['pre_deployments_' ~ tripleo_role_name]|default([]) }}"
                 - name: ArtifactsConfig
                   script: deploy-artifacts.sh
                   environment:
                     artifact_urls: "{{ deploy_artifact_urls }}"
-
               tags:
                 - overcloud
                 - pre_deploy_steps