CLOUDSTACK-4766: Add timeout if vm does not reach running state

The tests use to wait for ever for the vm to attain Running state.
Added a timeout so it does not get into infinite loop.

Signed-off-by: venkataswamybabu budumuru <venkataswamybabu.budumuru@citrix.com>
(cherry picked from commit e3bcdc16a11d7452b5bf6ce5e5993dcd008526a6)