CORD-1638 Rename ExampleTenant and drop obsolete references

Change-Id: Ia68efa15d84e536fd2f77aa3fea7ebabfd4a18c2
diff --git a/xos/synchronizer/model_policies/model_policy_exampletenant.py b/xos/synchronizer/model_policies/model_policy_exampleserviceinstance.py
similarity index 87%
rename from xos/synchronizer/model_policies/model_policy_exampletenant.py
rename to xos/synchronizer/model_policies/model_policy_exampleserviceinstance.py
index ee2880a..8244204 100644
--- a/xos/synchronizer/model_policies/model_policy_exampletenant.py
+++ b/xos/synchronizer/model_policies/model_policy_exampleserviceinstance.py
@@ -17,5 +17,5 @@
 from synchronizers.new_base.modelaccessor import *
 from synchronizers.new_base.model_policies.model_policy_tenantwithcontainer import TenantWithContainerPolicy
 
-class ExampleTenantPolicy(TenantWithContainerPolicy):
-    model_name = "ExampleTenant"
+class ExampleServiceInstancePolicy(TenantWithContainerPolicy):
+    model_name = "ExampleServiceInstance"