openshift_process fails with template does not contains message (#87)

* fix unexpected value

* changelog

* Update pod-template.yaml

* Update openshift_process.py

* Update openshift_process.py

* Update molecule/default/tasks/openshift_process.yml

Co-authored-by: Fabian von Feilitzsch <fabian@fabianism.us>

* Update pod-template.yaml

Co-authored-by: Fabian von Feilitzsch <fabian@fabianism.us>

changelogs/fragments/87-openshift_process-fix-template-without-message.yaml

@@ -0,0 +1,2 @@
+bugfixes:
+  - openshift_process - fix module execution when template does not include a message (https://github.com/ansible-collections/community.okd/pull/87).

molecule/default/files/pod-template.yaml

@@ -0,0 +1,23 @@
+---
+kind: Template
+apiVersion: template.openshift.io/v1
+metadata:
+  name: pod-template
+objects:
+  - apiVersion: v1
+    kind: Pod
+    metadata:
+      name: "Pod-${{ NAME }}"
+    spec:
+      containers:
+      - args:
+        - /bin/sh
+        - -c
+        - while true; do echo $(date); sleep 15; done
+        image: python:3.7-alpine
+        imagePullPolicy: Always
+        name: python
+parameters:
+  - name: NAME 
+    description: trailing name of the pod
+    required: true

molecule/default/tasks/openshift_process.yml

@@ -162,3 +162,22 @@
 
 - assert:
     that: result is not changed
+
+# Processing template without message
+- name: create template with file {{ files_dir }}/pod-template.yaml
+  kubernetes.core.k8s:
+    namespace: process-test
+    src:  "{{ files_dir }}/pod-template.yaml"
+    state: present
+
+- name: Process pod template
+  community.okd.openshift_process:
+    name: pod-template
+    namespace: process-test
+    state: rendered
+    parameters:
+      NAME: ansible
+  register: rendered_template
+
+- assert:
+    that: rendered_template.message == ""

plugins/modules/openshift_process.py

@@ -330,8 +330,9 @@ class OpenShiftProcess(K8sAnsibleMixin):
         except Exception as exc:
             self.module.fail_json(msg="Server failed to render the Template: {0}".format(to_native(exc)),
                                   error='', status='', reason='')
-
+        result['message'] = ""
-        result['message'] = response['message']
+        if "message" in response:
+            result['message'] = response['message']
         result['resources'] = response['objects']
 
         if state != 'rendered':