web: Add volume to handle debug logs (#1921)

When enabling debug web requests, the /var/log/tower directory needs
to exist.
Rather than just creating that directory in the container image then
create an emptyDir volume.

Closes: #1485

Signed-off-by: Dimitri Savineau <dsavinea@redhat.com>

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

@@ -261,6 +261,8 @@ spec:
               mountPath: "/etc/receptor/work_public_key.pem"
               subPath: "work-public-key.pem"
               readOnly: true
+            - name: {{ ansible_operator_meta.name }}-web-log
+              mountPath: /var/log/tower
 {% if development_mode | bool %}
             - name: awx-devel
               mountPath: "/awx_devel"
@@ -456,6 +458,8 @@ spec:
           emptyDir: {}
         - name: receptor-socket
           emptyDir: {}
+        - name: {{ ansible_operator_meta.name }}-web-log
+          emptyDir: {}
         - name: {{ ansible_operator_meta.name }}-receptor-config
           configMap:
             name: '{{ ansible_operator_meta.name }}-{{ deployment_type }}-configmap'