ATLAS-3747: Atlas Admin Purge API will take list of guids as query param instead of body

client/client-v2/src/main/java/org/apache/atlas/AtlasClientV2.java

@@ -597,7 +597,7 @@ public class AtlasClientV2 extends AtlasBaseClient {
         public static final API_V2 CREATE_ENTITIES             = new API_V2(ENTITY_BULK_API, HttpMethod.POST, Response.Status.OK);
         public static final API_V2 UPDATE_ENTITIES             = new API_V2(ENTITY_BULK_API, HttpMethod.POST, Response.Status.OK);
         public static final API_V2 DELETE_ENTITIES_BY_GUIDS    = new API_V2(ENTITY_BULK_API, HttpMethod.DELETE, Response.Status.OK);
-        public static final API_V2 PURGE_ENTITIES_BY_GUIDS     = new API_V2(ENTITY_PURGE_API, HttpMethod.DELETE, Response.Status.OK);
+        public static final API_V2 PURGE_ENTITIES_BY_GUIDS     = new API_V2(ENTITY_PURGE_API, HttpMethod.PUT, Response.Status.OK);
         public static final API_V2 GET_CLASSIFICATIONS         = new API_V2(ENTITY_API + "guid/%s/classifications", HttpMethod.GET, Response.Status.OK);
         public static final API_V2 ADD_CLASSIFICATIONS         = new API_V2(ENTITY_API + "guid/%s/classifications", HttpMethod.POST, Response.Status.NO_CONTENT);
         public static final API_V2 UPDATE_CLASSIFICATIONS      = new API_V2(ENTITY_API + "guid/%s/classifications", HttpMethod.PUT, Response.Status.NO_CONTENT);

webapp/src/main/java/org/apache/atlas/web/resources/AdminResource.java

@@ -87,6 +87,7 @@ import javax.ws.rs.DELETE;
 import javax.ws.rs.DefaultValue;
 import javax.ws.rs.GET;
 import javax.ws.rs.POST;
+import javax.ws.rs.PUT;
 import javax.ws.rs.Path;
 import javax.ws.rs.PathParam;
 import javax.ws.rs.Produces;
@@ -458,7 +459,7 @@ public class AdminResource {
         return result;
     }
 
-    @DELETE
+    @PUT
     @Path("/purge")
     @Consumes(Servlets.JSON_MEDIA_TYPE)
     @Produces(Servlets.JSON_MEDIA_TYPE)