Always override X-Forwarded-Proto header for Heat
Always override X-Forwarded-Proto header for Heat

Heat has the ssl middleware to handle the X-Forwarded-Proto header by
default. We override this header when SSL is enabled because we need
to, but overriding it even when we won't be terminating SSL will
prevent some attacks using this header.

Change-Id: I0b2c61cd4f47c8c08a84402af310983af752d3f2

rdo-puppet-modules/puppet-tripleo,paramite/puppet-tripleo,rdo-puppet-modules/puppet-tripleo,paramite/puppet-tripleo,paramite/puppet-tripleo,openstack/puppet-tripleo,openstack/puppet-tripleo,openstack/puppet-tripleo,rdo-puppet-modules/puppet-tripleo