ATLAS-3575:- Update authorization - admin-purge for purge entity.

repository/src/main/java/org/apache/atlas/repository/store/graph/v2/AtlasEntityStoreV2.java

@@ -521,7 +521,7 @@ public class AtlasEntityStoreV2 implements AtlasEntityStore {
             throw new AtlasBaseException(AtlasErrorCode.INVALID_PARAMETERS, "Guid(s) not specified");
         }
 
-        AtlasAuthorizationUtils.verifyAccess(new AtlasAdminAccessRequest(AtlasPrivilege.ADMIN_IMPORT), "purge entity: guids=", guids);
+        AtlasAuthorizationUtils.verifyAccess(new AtlasAdminAccessRequest(AtlasPrivilege.ADMIN_PURGE), "purge entity: guids=", guids);
         Collection<AtlasVertex> purgeCandidates = new ArrayList<>();
 
         for (String guid : guids) {