Add dashboard_tls_external ceph-ansible parameter

This change adds the dashboard_tls_external parameter
to the ceph-ansible group_vars when tls-everywhere is
enabled.
By doing this ceph-ansible looks for cert/keys on the
overcloud nodes (where certmonger generates them)
instead of assuming they're present in the undercloud.

Change-Id: Ia8f537d847c1854893df0646fb59edfb2536de89
(cherry picked from commit 53d892a73c)

deployment/ceph-ansible/ceph-base.yaml

@@ -338,6 +338,9 @@ parameters:
     type: string
     constraints:
     - allowed_values: ['swift', 'file', 'rbd', 's3']
+  EnableInternalTLS:
+    type: boolean
+    default: false
 
 parameter_groups:
 - label: deprecated
@@ -386,6 +389,7 @@ conditions:
                 expression: let(location => $.data.rightSplit(':', 1)[0]) -> regex('(?:https?://)?(.*?)/(.*)').split($location)[1]
                 data: {get_param: ContainerCephDaemonImage}
             expression: let(c => $.data.cred) -> $c.get($.data.ns, {}).values().last(default => "").isEmpty()
+  internal_tls_enabled: {equals: [{get_param: EnableInternalTLS}, true]}
 
 resources:
   ContainerImageUrlParts:
@@ -667,6 +671,12 @@ outputs:
                   if:
                   - dashboard_is_enabled
                   - map_merge:
+                    - if:
+                      - internal_tls_enabled
+                      -
+                        dashboard_tls_external: true
+                        dashboard_grafana_api_no_ssl_verify: true
+                      - {}
                     - {get_attr: [CephBaseAnsibleVars, value, vars]}
                     - dashboard_admin_password: {get_param: CephDashboardAdminPassword}
                     - grafana_admin_password: {get_param: CephGrafanaAdminPassword}