CLOUDSTACK-5685: reboot VR if a out-of-band power-on event is detected

(cherry picked from commit ee2adab7c7c9cf42eaf93c7eedb6dd32ebd8b501)
Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>

Conflicts:
	server/src/com/cloud/network/router/VirtualNetworkApplianceManagerImpl.java
CLOUDSTACK-7994: Network rules are not configured in VR after out-of-band movement due to host crash
Ensure that VR is re-booted when it is moved to another host out-of-band. This is necessary to re-program all network rules

(cherry picked from commit 513adab51b53ba1acdea908225cfffab90ca1595)
Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>

Conflicts:
	server/src/com/cloud/network/router/VirtualNetworkApplianceManagerImpl.java