domain users config should be backwards compatible

[Steven Hardy]

As evidenced by tripleo's reaction to the instance-users patches landing, we need a way for heat to transparently fall-back to the previous (non domain) behavior in the event the deployer can't or won't set the three new config options.

Also we should provide a simple tools/ script which can be used to simply create the domain, user and role assignment, so deployers who don't have python-openstackclient can use it and/or those who don't want to think about running the commands can have a helper script.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/78048

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/78310

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/78048
Committed: https://git.openstack.org/cgit/openstack/heat/commit/?id=c05dc06f0b437460627180312cbb949bf6e3a0b4
Submitter: Jenkins
Branch: master

commit c05dc06f0b437460627180312cbb949bf6e3a0b4
Author: Steven Hardy <email address hidden>
Date: Wed Mar 5 00:09:02 2014 +0000

    Add tools/create_heat_domain helper script

    For users who don't yet have python-openstackclient, or who require
    a more automated way of creating the heat domain and domain-admin
    user, provide a simple wrapper for the keystoneclient python API
    which will create the domain and user, then print a helpful cut/paste
    message to allow heat.conf to be easily updated.

    It requires a cloud-admin users credentials to be sourced in the
    environment, OS_USERNAME/OS_PASSWORD/OS_AUTH_URL and also a script
    specific variable HEAT_DOMAIN_PASSWORD which specifies the password
    for the domain-admin user. Other values may be overridden by the
    environment but default to sane values.

    Change-Id: I5731ba72491dcf515c5d230b55056d9263341c54
    Partial-Bug: #1287980

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/78310
Committed: https://git.openstack.org/cgit/openstack/heat/commit/?id=252faed5f567880f30066ecd27a62c88f66bfa67
Submitter: Jenkins
Branch: master

commit 252faed5f567880f30066ecd27a62c88f66bfa67
Author: Steven Hardy <email address hidden>
Date: Wed Mar 5 16:38:54 2014 +0000

    heat_keystoneclient add legacy fallback path

    If users fail to observe the reccomendations in the commit messages
    and/or release notes and use a heat.conf from a previous version of
    heat currently some functionality will fail due to the missing
    domain configuration in heat.conf. Instead degrade gracefully with
    warnings, calling the non-domain functions which are maintained
    (for now) for backwards compatibility.

    Hopefully we won't have to maintain this huge pile of legacy stuff
    for too long :(

    Change-Id: Ia029d585dfdb2563609725589c41083819a11a3b
    Closes-Bug: #1287980

[Thierry Carrez (ttx)]

Trying to include this one in the I3 cut

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: milestone-proposed
Review: https://review.openstack.org/78670

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/78670
Committed: https://git.openstack.org/cgit/openstack/heat/commit/?id=7953ce1fecd51b26d213c0d80a3d1bce1295c14e
Submitter: Jenkins
Branch: milestone-proposed

commit 7953ce1fecd51b26d213c0d80a3d1bce1295c14e
Author: Steven Hardy <email address hidden>
Date: Wed Mar 5 16:38:54 2014 +0000

    heat_keystoneclient add legacy fallback path

    If users fail to observe the reccomendations in the commit messages
    and/or release notes and use a heat.conf from a previous version of
    heat currently some functionality will fail due to the missing
    domain configuration in heat.conf. Instead degrade gracefully with
    warnings, calling the non-domain functions which are maintained
    (for now) for backwards compatibility.

    Hopefully we won't have to maintain this huge pile of legacy stuff
    for too long :(

    Change-Id: Ia029d585dfdb2563609725589c41083819a11a3b
    Closes-Bug: #1287980