bump minimal ansible version to 2.8.0 (kubernetes-sigs#5984)

* bump minimal ansible version to 2.8.0

* check ansible version in separate playbook

ansible_version.yml

@@ -0,0 +1,15 @@
+---
+- hosts: localhost
+  gather_facts: false
+  become: no
+  vars:
+    minimal_ansible_version: 2.8.0
+    ansible_connection: local
+  tasks:
+    - name: "Check ansible version >={{ minimal_ansible_version }}"
+      assert:
+        msg: "Ansible must be {{ minimal_ansible_version }} or higher"
+        that:
+          - ansible_version.string is version(minimal_ansible_version, ">=")
+      tags:
+        - check

cluster.yml

@@ -1,17 +1,6 @@
 ---
-- hosts: localhost
-  gather_facts: false
-  become: no
-  tasks:
-    - name: "Check ansible version >=2.7.8"
-      assert:
-        msg: "Ansible must be v2.7.8 or higher"
-        that:
-          - ansible_version.string is version("2.7.8", ">=")
-      tags:
-        - check
-  vars:
-    ansible_connection: local
+- name: Check ansible version
+  import_playbook: ansible_version.yml
 
 - hosts: all
   gather_facts: false

mitogen.yaml

@@ -1,9 +1,13 @@
 ---
+- name: Check ansible version
+  import_playbook: ansible_version.yml
+
 - hosts: localhost
   strategy: linear
   vars:
     mitogen_version: master
     mitogen_url: https://github.com/dw/mitogen/archive/{{ mitogen_version }}.zip
+    ansible_connection: local
   tasks:
     - name: Create mitogen plugin dir
       file:

recover-control-plane.yml

@@ -1,17 +1,6 @@
 ---
-- hosts: localhost
-  gather_facts: False
-  become: no
-  tasks:
-    - name: "Check ansible version >=2.7.8"
-      assert:
-        msg: "Ansible must be v2.7.8 or higher"
-        that:
-          - ansible_version.string is version("2.7.8", ">=")
-      tags:
-        - check
-  vars:
-    ansible_connection: local
+- name: Check ansible version
+  import_playbook: ansible_version.yml
 
 - hosts: bastion[0]
   gather_facts: False

remove-node.yml

@@ -1,17 +1,6 @@
 ---
-- hosts: localhost
-  become: no
-  gather_facts: no
-  tasks:
-    - name: "Check ansible version >=2.7.8"
-      assert:
-        msg: "Ansible must be v2.7.8 or higher"
-        that:
-          - ansible_version.string is version("2.7.8", ">=")
-      tags:
-        - check
-  vars:
-    ansible_connection: local
+- name: Check ansible version
+  import_playbook: ansible_version.yml
 
 - hosts: "{{ node | default('etcd:k8s-cluster:calico-rr') }}"
   gather_facts: no

reset.yml

@@ -1,17 +1,6 @@
 ---
-- hosts: localhost
-  become: no
-  gather_facts: False
-  tasks:
-    - name: "Check ansible version >=2.7.8"
-      assert:
-        msg: "Ansible must be v2.7.8 or higher"
-        that:
-          - ansible_version.string is version("2.7.8", ">=")
-      tags:
-        - check
-  vars:
-    ansible_connection: local
+- name: Check ansible version
+  import_playbook: ansible_version.yml
 
 - hosts: bastion[0]
   gather_facts: False

scale.yml

@@ -1,17 +1,6 @@
 ---
-- hosts: localhost
-  gather_facts: False
-  become: no
-  tasks:
-    - name: "Check ansible version >=2.7.8"
-      assert:
-        msg: "Ansible must be v2.7.8 or higher"
-        that:
-          - ansible_version.string is version("2.7.8", ">=")
-      tags:
-        - check
-  vars:
-    ansible_connection: local
+- name: Check ansible version
+  import_playbook: ansible_version.yml
 
 - hosts: all
   gather_facts: false

upgrade-cluster.yml

@@ -1,17 +1,6 @@
 ---
-- hosts: localhost
-  gather_facts: false
-  become: no
-  tasks:
-    - name: "Check ansible version >=2.7.8"
-      assert:
-        msg: "Ansible must be v2.7.8 or higher"
-        that:
-          - ansible_version.string is version("2.7.8", ">=")
-      tags:
-        - check
-  vars:
-    ansible_connection: local
+- name: Check ansible version
+  import_playbook: ansible_version.yml
 
 - hosts: all
   gather_facts: false