Remove keystone_ec2_uri flag from lib/heat

As per I9908e17bed33fdc64d058a6d6db7b29f9c8d53d6 keystone_ec2_uri
is now derived from auth_uri. Thus keystone_ec2_uri is useless
now

Change-Id: I97954fdbbd74a6920b307f33873bcc8d70331bf4
Use nova bindir of /usr/bin on SUSE

Similar to Fedora pip on SUSE installs things into /usr/bin by default.

Change-Id: I73a71288915b99d553ebe9d8e17ac7abef451a60
Merge "Remove keystone_ec2_uri flag from lib/heat"
Merge "Use nova bindir of /usr/bin on SUSE"