Intent stuck in installing and withdrawing states

When installing intents from CLI, intent state stuck in INSTALLING state for seconds. When withdrawing intents from CLI, intent state stuck in WITHDRAWING state forever. However the behavior of flows are normal.

Steps to reproduce the issue:
1. Start a 1-node onos and 2 devices with null provider;
2. Add a h2h intent from CLI, then it takes seconds for the intent to get installed;
3. Remove the intent from CLI, the intent state stuck in WITHDRAWING state.