Host aliases (#1373)

* feat: add HostAliases to web/task containers (fixes #646)
* feat: add HostAliases to web/task containers
* Make host_aliases display in the Operator UI
* Add default value for host_aliases and add to web deployment template

Co-authored-by: zhangpeng.zong <zhangpeng.zong@funplus.com>
Co-authored-by: Dimitri Savineau <savineau.dimitri@gmail.com>

config/crd/bases/awx.ansible.com_awxs.yaml

@@ -1345,6 +1345,18 @@ spec:
               image_pull_secret:  # deprecated
                 description: (Deprecated) Image pull secret for app and database containers
                 type: string
+              host_aliases:
+                description: HostAliases for app containers
+                type: array
+                items:
+                  type: object
+                  properties:
+                    ip:
+                      type: string
+                    hostnames:
+                      type: array
+                      items:
+                        type: string
               task_resource_requirements:
                 description: Resource requirements for the task container
                 properties:

config/manifests/bases/awx-operator.clusterserviceversion.yaml

@@ -323,6 +323,11 @@ spec:
         path: image_pull_secret
         x-descriptors:
         - urn:alm:descriptor:com.tectonic.ui:hidden
+      - displayName: HostAliases for app containers
+        path: host_aliases
+        x-descriptors:
+        - urn:alm:descriptor:com.tectonic.ui:advanced
+        - urn:alm:descriptor:com.tectonic.ui:text
       - displayName: Web Container Resource Requirements
         path: web_resource_requirements
         x-descriptors: