Allow configuration of nova micro-version in the settings

Allows to config the api version to use on the local_settings
through OPENSTACK_API_VERSIONS.
Updates docs and local_settings.py.example.
Defaults to version 2.

Closes-Bug: 1497056

Change-Id: If9ec4dcdd79baeec105dbe3ec5345b7d6cf1dc10
Signed-off-by: Itxaka <iserrano@redhat.com>

doc/source/topics/settings.rst

@@ -516,7 +516,8 @@ Default::
     {
         "data-processing": 1.1,
         "identity": 2.0,
-        "volume": 2
+        "volume": 2,
+        "compute": 2
     }
 
 Overrides for OpenStack API versions. Use this setting to force the
@@ -532,7 +533,8 @@ OpenStack dashboard to use a specific API version for a given service API.
         OPENSTACK_API_VERSIONS = {
             "data-processing": 1.1,
             "identity": 3,
-            "volume": 2
+            "volume": 2,
+            "compute": 2
         }
 
 ``OPENSTACK_ENABLE_PASSWORD_RETRIEVE``

openstack_dashboard/api/nova.py

@@ -45,6 +45,10 @@ from openstack_dashboard.api import network_base
 
 LOG = logging.getLogger(__name__)
 
+# Supported compute versions
+VERSIONS = base.APIVersionManager("compute", preferred_version=2)
+VERSIONS.load_supported_version(1.1, {"client": nova_client, "version": 1.1})
+VERSIONS.load_supported_version(2, {"client": nova_client, "version": 2})
 
 # API static values
 INSTANCE_ACTIVE_STATE = 'ACTIVE'
@@ -445,7 +449,8 @@ class FloatingIpManager(network_base.FloatingIpManager):
 def novaclient(request):
     insecure = getattr(settings, 'OPENSTACK_SSL_NO_VERIFY', False)
     cacert = getattr(settings, 'OPENSTACK_SSL_CACERT', None)
-    c = nova_client.Client(2, request.user.username,
+    c = nova_client.Client(VERSIONS.get_active_version()['version'],
+                           request.user.username,
                            request.user.token.id,
                            project_id=request.user.tenant_id,
                            auth_url=base.url_for(request, 'compute'),

openstack_dashboard/local/local_settings.py.example

@@ -50,6 +50,7 @@ WEBROOT = '/'
 #    "data-processing": 1.1,
 #    "identity": 3,
 #    "volume": 2,
+#    "compute": 2
 #}
 
 # Set this to True if running on multi-domain model. When this is enabled, it