fixes #3127. Get files for oc_apply from remote host

roles/openshift_metrics/tasks/install_metrics.yaml

@@ -20,15 +20,23 @@
   loop_control:
     loop_var: include_file
 
+- find: paths={{ mktemp.stdout }}/templates patterns=*.yaml
+  register: object_def_files
+  changed_when: no
+
+- slurp: src={{item.path}}
+  register: object_defs
+  with_items: "{{object_def_files.files}}"
+  changed_when: no
+
 - name: Create objects
   include: oc_apply.yaml
   vars:
     kubeconfig: "{{ mktemp.stdout }}/admin.kubeconfig"
     namespace: "{{ openshift_metrics_project }}"
-    file_name: "{{ item }}"
-    file_content: "{{ lookup('file',item) | from_yaml }}"
-  with_fileglob:
-    - "{{ mktemp.stdout }}/templates/*.yaml"
+    file_name: "{{ item.source }}"
+    file_content: "{{ item.content | b64decode | from_yaml }}"
+  with_items: "{{ object_defs.results }}"
 
 - name: Scaling up cluster
   include: start_metrics.yaml