Fixed the Fastly endpoint health check
Fixed the Fastly endpoint health check

The Fastly health check was using an invalid URL when using default
conf values.  So instead of checking httpsapi.fastly.com it now
checks https://api.fastly.com

ie. the uri has the :// added to it.

Change-Id: I4c48536b040bbe34982b239e1c557a81dd3d5dcd

obulpathi/poppy,stackforge/poppy,stackforge/poppy,obulpathi/poppy,stackforge/poppy,openstack/poppy,obulpathi/poppy,openstack/poppy,openstack/poppy