Move sahara precheck into its own role

Change-Id: I58d86ffb8001f54a3748fcd7fbabfeb5b873102c
Partially-implements: blueprint condition-pre-check

ansible/roles/haproxy/tasks/precheck.yml

@@ -101,3 +101,14 @@
     - enable_manila | bool
     - "{{ 'manila_api' not in haproxy_stat }}"
     - inventory_hostname in groups['haproxy']
+
+- name: Checking free port for Sahara API HAProxy
+  wait_for:
+    host: "{{ kolla_internal_vip_address }}"
+    port: "{{ sahara_api_port }}"
+    connect_timeout: 1
+    state: stopped
+  when:
+    - enable_sahara | bool
+    - "{{ 'sahara_api' not in haproxy_stat }}"
+    - inventory_hostname in groups['haproxy']

ansible/roles/prechecks/tasks/port_checks.yml

@@ -163,26 +163,6 @@
     - enable_kuryr | bool
     - inventory_hostname in groups['compute']
 
-- name: Checking free port for Sahara API
-  wait_for:
-    host: "{{ hostvars[inventory_hostname]['ansible_' + api_interface]['ipv4']['address'] }}"
-    port: "{{ sahara_api_port }}"
-    connect_timeout: 1
-    state: stopped
-  when:
-    - enable_sahara | bool
-    - inventory_hostname in groups['sahara-api']
-
-- name: Checking free port for Sahara API HAProxy
-  wait_for:
-    host: "{{ kolla_internal_vip_address }}"
-    port: "{{ sahara_api_port }}"
-    connect_timeout: 1
-    state: stopped
-  when:
-    - enable_sahara | bool
-    - inventory_hostname in groups['haproxy']
-
 - name: Checking free port for HAProxy stats
   wait_for:
     host: "{{ kolla_internal_vip_address }}"

ansible/roles/sahara/tasks/precheck.yml

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