Performance improvement when handling host move events

- Avoid querying shouldProgram every time
- Override flows directly instead of remove and add
- Remove unnecessary event handling delay since we have in-order execution now
- Avoid re-initiation of shouldProgram
- Make sure executors are shut down during SR deactivation

Change-Id: I28e383ed2dcb66d503da25934456008e83683b78
7 files changed
tree: ad6c114532ce67c675d2e3ae91b6a3ab926cd574
  1. BUCK
  2. app/
  3. pom.xml
  4. web/