adding conditional to checksum template and removing default for public_base_url to fix undefined variable

Author: aknochow

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

@@ -2012,7 +2012,6 @@ spec:
               public_base_url:
                 description: Public base URL
                 type: string
-                default: ''
             type: object
           status:
             properties:

roles/installer/templates/deployments/web.yaml.j2

@@ -29,12 +29,14 @@ spec:
         kubectl.kubernetes.io/default-container: '{{ ansible_operator_meta.name }}-web'
 {% for template in [
     "configmaps/config.yaml",
-    "configmaps/redirect-page.configmap.html",
     "secrets/app_credentials.yaml",
     "storage/persistent.yaml",
   ] %}
         checksum-{{ template | replace('/', '-') }}: "{{ lookup('template', template + '.j2') | sha1 }}"
 {% endfor %}
+{% if public_base_url is defined %}
+        checksum-configmaps-redirect-page.configmap.html: "{{ lookup('template', 'configmaps/redirect-page.configmap.html.j2') | sha1 }}"
+{% endif %}
 {% for secret in [
     "bundle_cacert",
     "route_tls",