Add cluster name for the mothership, small UI fixes

Related-PROD: K0RQA-20
Change-Id: Ia7c8a9e20fc28d0484a17ea4c8073193817e0f9f
diff --git a/cfg_checker/nodes.py b/cfg_checker/nodes.py
index eb2ebd8..9b906d8 100644
--- a/cfg_checker/nodes.py
+++ b/cfg_checker/nodes.py
@@ -103,7 +103,8 @@
         _info = {
             'mcp_release': self.mcp_release,
             'openstack_release': self.openstack_release,
-            'k0rdent_release': self.kube.get_k0rdent_release()
+            'k0rdent_release': self.kube.get_k0rdent_release(),
+            'cluster_name': self.kube.get_cluster_name_from_kube_config()
         }
         return _info