Added instance_id in compute metadata
Added instance_id in compute metadata

Change-Id: Ifa9e28b3a52f6e1226fd9a411d9d6f0fbd1e9ced

muraliselva10/cloudkitty,FNST-OpenStack/cloudkitty,openstack/cloudkitty,muraliselva10/cloudkitty,openstack/cloudkitty,FNST-OpenStack/cloudkitty,stackforge/cloudkitty,stackforge/cloudkitty