Add instruction for running metadata service
Add instruction for running metadata service

Change-Id: I039a80e19a596e580e1c300b031952426871cc5d

MayankGo/ec2-api,hayderimran7/ec2-api,hayderimran7/ec2-api,openstack/ec2-api,MayankGo/ec2-api,openstack/ec2-api,stackforge/ec2-api,stackforge/ec2-api