vncproxy config broken in ipv6 deployments

[Ben Nemec]

This causes deployment to the compute node to fail with:

Error: Error from DataBinding 'hiera' while looking up 'tripleo::trusted_cas::ca_map': (<unknown>): found unexpected ':' while scanning a plain scalar at line 102 column 32 on node overcloud-novacompute-0.localdomain

This is because the brackets are not stripped from the vncproxy_host hiera value in the compute profile like they are in the vncproxy profile.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/363204

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/363204
Committed: https://git.openstack.org/cgit/openstack/tripleo-heat-templates/commit/?id=57898b416234afe3f9ba15488d521711644cf375
Submitter: Jenkins
Branch: master

commit 57898b416234afe3f9ba15488d521711644cf375
Author: Ben Nemec <email address hidden>
Date: Tue Aug 30 15:58:43 2016 -0500

    De-bracket vncproxy_host in compute profile

    This is done in the vncproxy profile, but for some reason is not in
    the compute one. It causes hiera to explode when the brackets are
    left, so we need to do the bracket stripping here too.

    Also switches both places to just use the host_nobrackets version
    of the endpoint instead of stripping them with str_replace.

    Change-Id: I7ccd84b575fd652f6412fdb1869c31c79a7bf53b
    Closes-Bug: 1618623