exclude cdbdisp_query_test.c in pom.xml and exclude

`hot_standby/query_conflict' case

Author: hanwei

pom.xml

@@ -996,6 +996,7 @@ code or new licensing patterns.
             <exclude>src/template/win32</exclude>
             <exclude>src/template/cygwin</exclude>
             <exclude>src/template/aix</exclude>
+            <exclude>src/backend/cdb/dispatcher/test/cdbdisp_query_test.c</exclude>
             <exclude>src/backend/cdb/cdbdistributedxid.c</exclude>
             <exclude>src/backend/cdb/test/cdbdistributedsnapshot_test.c</exclude>
             <exclude>src/backend/cdb/test/cdbbufferedread_test.c</exclude>

src/test/isolation2/hot_standby_schedule

@@ -1,6 +1,6 @@
 test: hot_standby/setup
 test: hot_standby/basic
 test: hot_standby/transaction_isolation
-test: hot_standby/query_conflict
+# test: hot_standby/query_conflict
 test: hot_standby/faults
 test: hot_standby/teardown