fix: Add manila into service mapping

Add manila into service mapping. So if we deployed the
manila service, we can get the endpoint of it by default.
Re-sort the service mapping by its' initial.

Change-Id: I88dbafbe34b0e95eff0b00d9260f1b7a6fc0db77

etc/skyline.yaml.sample

@@ -81,6 +81,7 @@ openstack:
     object-store: swift
     orchestration: heat
     placement: placement
+    sharev2: manilav2
     volumev3: cinder
   system_admin_roles:
   - admin

skyline_apiserver/config/openstack.py

@@ -166,18 +166,19 @@ service_mapping = Opt(
     ),
     schema=Dict[StrictStr, StrictStr],
     default={
-        "volumev3": "cinder",
-        "image": "glance",
-        "orchestration": "heat",
-        "identity": "keystone",
-        "network": "neutron",
-        "compute": "nova",
-        "placement": "placement",
         "baremetal": "ironic",
-        "load-balancer": "octavia",
-        "object-store": "swift",
-        "database": "trove",
+        "compute": "nova",
         "container-infra": "magnum",
+        "database": "trove",
+        "identity": "keystone",
+        "image": "glance",
+        "load-balancer": "octavia",
+        "network": "neutron",
+        "object-store": "swift",
+        "orchestration": "heat",
+        "placement": "placement",
+        "volumev3": "cinder",
+        "sharev2": "manilav2",
     },
 )