Honor wait_timeout in k8s_info for missing resource (#360)

* Honor wait in k8s_info for missing resource

The wait logic in the k8s_info module immediately returns when no
resources are found, regardless whether a wait_timeout has been
specified. This expands the logic to wait when a name has been provided.
The case this is specifically meant to address is when querying for a
resource that is indirectly created by another resource, for example, a
pod created by a deployment or an operator.

The existing logic in every other case should remain as it was before.
This means if a query might return more than one resource--all pods with
some label, for example--the module will return immediately if no pods
are found, even if a wait_timeout has been provided.

* Add changelog fragment

molecule/default/tasks/info.yml

@@ -182,6 +182,24 @@
           - not dne_api.resources
           - not dne_api.api_found
 
+    - name: Start timer
+      set_fact:
+        start: "{{ lookup('pipe', 'date +%s') }}"
+
+    - name: Wait for non-existent pod to be created
+      k8s_info:
+        kind: Pod
+        name: does-not-exist
+        namespace: "{{ wait_namespace }}"
+        wait: yes
+        wait_timeout: 45
+      register: result
+
+    - name: Check that module waited
+      assert:
+        that:
+          - "{{ lookup('pipe', 'date +%s') }} - {{ start }} > 30"
+
   always:
     - name: Remove namespace
       k8s: