CLOUDSTACK-6668: OVS distributed routing: ensure bridge is deleted when
last VM from the VPC is deleted on a host

OVS distributed routing: ensure bridge is deleted when last VM from the
VPC is deleted on a host. This fix ensures that bridge is
destroyed.
CLOUDSTACK-6685: OVS distributed firewall: source CIDR mismatch while
populating ingress & egress network ACL

fix ensures propoer values for nw_src and nw_dst are popoluated
depending on the ingress or egress acl
CLOUDSTACK-6686:NetworkACLItemCidrsDaoImpl uses firewallRuleId instead
of networkAclItemId

fix uses networkAclItemId instead of firewallRuleId
CLOUDSTACK-6476: Basic Zone with Multiple Pods Setup: DHCP server doesnt get deployed in the pod where the VM gets deployed

Changes:
PodId in which the router should get started was not being saved to the DB due to the VO's setter method not following the setXXX format. So when planner loaded the router from DB, it always got podId as null and that would allow planner to deploy the router in any pod. If the router happens to start in a different pod than the user VM, the Vm fails to start since the Dhcp service check fails.

Fixed the VO's setPodId method, that was causing the DB save operation fail.
CLOUDSTACK-6672: [Automation] NPE observed while listing system vms

fixing NPE
CLOUDSTACK-6712: NPE in findJobInstanceUuid() in ApiDBUtils
CLOUDSTACK-6714: monitor script echo service command is added with quotes
releasing dhcp leases on vpcs failes because the network tier of the tennant aren't behinbd eth0. Here we make interface selection dynamic.

Signed-off-by: Daan Hoogland <daan@onecht.net>
A slightly more reliable way of extracting the device name. Thanks John.

Signed-off-by: Daan Hoogland <daan@onecht.net>
travis for 4.4