CLOUDSTACK-3870 [VMware] Management traffic network over a VLAN is not working

CLOUDSTACK-3437 In case of multiple physical network setup we see log message "can't get physical network"

CloudStack's control network is management network in case of VMware.
Processing management VLAN id provided in zone traffic label for management traffic.`

Signed-off-by: Sateesh Chodapuneedi <sateesh@apache.org>
CLOUDSTACK-3669:  Bringing down the dynamic scalable check (for VM whether it has xstools or vmware tools in it) to the management layer.
CLOUDSTACK-3779: Support System vm scaling on VMWare

Marked the system template new system template as dynamicallyScalable
   - handled upgrade case
   - moved "dynamicallyScalable" flag to vm_instance table from user_vm_details to support dynamic scaling of system vm
Signed off by : Nitin Mehta<nitin.mehta@citrix.com>