Move horizon precheck into its own role

Change-Id: I4e2f8e21bfd295d235d1264e427328e4baa85df3
Partially-implements: blueprint condition-pre-check

ansible/roles/haproxy/tasks/precheck.yml

@@ -80,6 +80,17 @@
     - "{{ 'heat_api_cfn' not in haproxy_stat }}"
     - inventory_hostname in groups['haproxy']
 
+- name: Checking free port for Horizon HAProxy
+  wait_for:
+    host: "{{ kolla_internal_vip_address }}"
+    port: "80"
+    connect_timeout: 1
+    state: stopped
+  when:
+    - enable_horizon | bool
+    - "{{ 'horizon' not in haproxy_stat }}"
+    - inventory_hostname in groups['haproxy']
+
 - name: Checking free port for watcher API HAProxy
   wait_for:
     host: "{{ kolla_internal_vip_address }}"

ansible/roles/horizon/tasks/precheck.yml

@@ -1 +1,16 @@
 ---
+- name: Get container facts
+  kolla_container_facts:
+    name:
+      - horizon
+  register: container_facts
+
+- name: Checking free port for Horizon
+  wait_for:
+    host: "{{ hostvars[inventory_hostname]['ansible_' + api_interface]['ipv4']['address'] }}"
+    port: "80"
+    connect_timeout: 1
+    state: stopped
+  when:
+    - container_facts['horizon'] is not defined
+    - inventory_hostname in groups['horizon']

ansible/roles/prechecks/tasks/port_checks.yml

@@ -193,30 +193,6 @@
     - enable_haproxy | bool
     - inventory_hostname in groups['haproxy']
 
-
-
-
-
-- name: Checking free port for Horizon
-  wait_for:
-    host: "{{ hostvars[inventory_hostname]['ansible_' + api_interface]['ipv4']['address'] }}"
-    port: "80"
-    connect_timeout: 1
-    state: stopped
-  when:
-    - enable_horizon | bool
-    - inventory_hostname in groups['horizon']
-
-- name: Checking free port for Horizon HAProxy
-  wait_for:
-    host: "{{ kolla_internal_vip_address }}"
-    port: "80"
-    connect_timeout: 1
-    state: stopped
-  when:
-    - enable_horizon | bool
-    - inventory_hostname in groups['haproxy']
-
 - name: Checking free port for Ironic
   wait_for:
     host: "{{ hostvars[inventory_hostname]['ansible_' + api_interface]['ipv4']['address'] }}"