Remove ignore error and unnecessary when

ignore error was triggered at flavor creation when octavia_all have
mutliple hosts, solved with run only on first node.

Change-Id: I92fc665ad6bd2bc4359b81bbccf1cba08e2d7703
(cherry picked from commit a731313a2910710d8935aa41f3ab2dfc9a1a50ec)

tasks/main.yml

@@ -68,6 +68,7 @@
 
 - include: octavia_flavor_create.yml
   when:
+    - inventory_hostname == groups['octavia_all'][0]
     - octavia_nova_flavor_uuid is not defined
   tags:
     - octavia-install

tasks/octavia_flavor_create.yml

@@ -29,10 +29,6 @@
     vcpus: "{{ octavia_amp_vcpu }}"
     disk: "{{ octavia_amp_disk }}"
     is_public: False
-  ignore_errors: yes # that module is buggy?
-  when:
-    - octavia_nova_flavor_uuid is not defined
-
 
 - name: Gather Octavia Flavor Id
   os_flavor_facts:
@@ -45,9 +41,6 @@
       project_domain_name: "{{ octavia_service_project_domain_id }}"
     endpoint_type: "{{ octavia_ansible_endpoint_type }}"
     name: "{{ octavia_amp_flavor_name}}"
-  ignore_errors: yes
-  when:
-    - octavia_nova_flavor_uuid is not defined
 
 - name: Set Octavia Flavor UUID fact 1
   set_fact: