Do not configure nginx proxy for ec2 by default

EC2 API was removed from nova in Mitaka. It was moved to its own service
openstack/ec2-api. We even do not have packages for it in Mirantis.
Do not create ngix proxy site for it by default.

Change-Id: I1cc6fbbdc2df23df3de3a744ffa2501c128af9c1
Related-Prod: PROD-19157
1 file changed