node, vars/main.yml: define l_is_ha and l_is_same_version

Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>

roles/openshift_node/tasks/node_system_container.yml

@@ -16,17 +16,16 @@
   register: update_result
   changed_when: "'Extracting' in update_result.stdout"
   when:
-  - openshift.common.version is defined
-  - openshift.common.version == openshift_version
-  - ("node" in result.stdout) | bool
+  - l_is_same_version
+  - ("node" in result.stdout)
 
 - name: Uninstall Node system container package
   command: >
     atomic uninstall {{ openshift.common.service_type }}-node
   failed_when: False
   when:
-  - (openshift.common.version is not defined) or (openshift.common.version != openshift_version)
-  - ("node" in result.stdout) | bool
+  - not l_is_same_version
+  - ("node" in result.stdout)
 
 - name: Install Node system container package
   command: >
@@ -34,4 +33,4 @@
   register: install_node_result
   changed_when: "'Extracting' in pull_result.stdout"
   when:
-  - (openshift.common.version is not defined) or (openshift.common.version != openshift_version) or ("node" not in result.stdout) | bool
+  - not l_is_same_version or ("node" not in result.stdout) | bool

roles/openshift_node/tasks/openvswitch_system_container.yml

@@ -16,8 +16,7 @@
   register: update_result
   changed_when: "'Extracting' in update_result.stdout"
   when:
-  - openshift.common.version is defined
-  - openshift.common.version == openshift_version
+  - l_is_same_version
   - ("openvswitch" in result.stdout) | bool
 
 - name: Uninstall OpenvSwitch system container package
@@ -25,13 +24,13 @@
     atomic uninstall openvswitch
   failed_when: False
   when:
-  - (openshift.common.version is not defined) or (openshift.common.version != openshift_version)
+  - not l_is_same_version
   - ("openvswitch" in result.stdout) | bool
 
 - name: Install OpenvSwitch system container package
   command: >
     atomic install --system --name=openvswitch {{ openshift.common.system_images_registry }}/{{ openshift.node.ovs_system_image }}:{{ openshift_image_tag }}
   when:
-  - (openshift.common.version is not defined) or (openshift.common.version != openshift_version) or ("openvswitch" not in result.stdout) | bool
+  - not l_is_same_version or ("openvswitch" not in result.stdout) | bool
   notify:
   - restart docker

roles/openshift_node/vars/main.yml

@@ -0,0 +1,2 @@
+---
+l_is_same_version: "{{ (openshift.common.version is defined) and (openshift.common.version == openshift_version) | bool }}"