we should be able to construct auth_url from auth_host, auth_protocol, auth_port and version fields

[Senthilnathan Murugappan]

Before the latest R3.2 changes for KeystoneV3 we were able to construct auth_url from auth_host and other keystone params.
Now if the auth_url is not specified we default to https://127.0.0.1:35357/v3 as auth_url, believe it would be better to construct the auth_url from auth_host etal if not specified which will also be backward compatible with pre-R3.2.6 releases.

[Ignatious Johnson Christopher (ijohnson-x)]

We are constructing auth_url from the auth_* params provisioned. https://github.com/Juniper/contrail-controller/blame/R3.2/src/config/api-server/vnc_auth_keystone.py#L158

Prior to the fix for bug https://bugs.launchpad.net/juniperopenstack/+bug/1716430, we defaulted to v2 always.

Fix will be,

1. If auth_url specified and v3 in auth_url do v3 auth
2. If auth_url specified and v2.0 in auth_url do v2 auth
3. If auth_url specified and v3/v2.0 not in auth_url do v3 auth
4. If auth_url is not specified default to v2 auth (backward compatible)

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/36802
Submitter: Ignatious Johnson Christopher (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/36803
Submitter: Ignatious Johnson Christopher (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/36804
Submitter: Ignatious Johnson Christopher (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/36805
Submitter: Ignatious Johnson Christopher (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/36802
Submitter: Ignatious Johnson Christopher (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/36803
Submitter: Ignatious Johnson Christopher (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/36804
Submitter: Ignatious Johnson Christopher (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/36805
Submitter: Ignatious Johnson Christopher (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Reviewed: https://review.opencontrail.org/36803
Committed: http://github.com/Juniper/contrail-controller/commit/e1cbacd9173795551a3aea6a27d7549a4b5d1264
Submitter: Zuul (<email address hidden>)
Branch: R4.1

commit e1cbacd9173795551a3aea6a27d7549a4b5d1264
Author: Ignatious Johnson Christopher <email address hidden>
Date: Tue Oct 24 22:54:53 2017 -0700

Default to keystone v2 auth if auth_url is not

specified in contrail keystone auth config file,
to make it backward compatible to pre 3.2.6 builds.

Change-Id: I49886e5403ee051cbe5200d3da0dc4184b507ffc
Closes-Bug: 1727005

[OpenContrail Admin (ci-admin-f)]

Reviewed: https://review.opencontrail.org/36805
Committed: http://github.com/Juniper/contrail-controller/commit/88d4721fa51a49985a47bc3f13dfd1f20d37f8f6
Submitter: Zuul (<email address hidden>)
Branch: R3.2

commit 88d4721fa51a49985a47bc3f13dfd1f20d37f8f6
Author: Ignatious Johnson Christopher <email address hidden>
Date: Tue Oct 24 22:54:53 2017 -0700

Default to keystone v2 auth if auth_url is not

specified in contrail keystone auth config file,
to make it backward compatible to pre 3.2.6 builds.

Change-Id: I49886e5403ee051cbe5200d3da0dc4184b507ffc
Closes-Bug: 1727005

[OpenContrail Admin (ci-admin-f)]

Reviewed: https://review.opencontrail.org/36802
Committed: http://github.com/Juniper/contrail-controller/commit/767f9e74b5f5b31227aa938dcd8f2b7d1507e56a
Submitter: Zuul (<email address hidden>)
Branch: master

commit 767f9e74b5f5b31227aa938dcd8f2b7d1507e56a
Author: Ignatious Johnson Christopher <email address hidden>
Date: Tue Oct 24 22:54:53 2017 -0700

Default to keystone v2 auth if auth_url is not

specified in contrail keystone auth config file,
to make it backward compatible to pre 3.2.6 builds.

Change-Id: I49886e5403ee051cbe5200d3da0dc4184b507ffc
Closes-Bug: 1727005

[OpenContrail Admin (ci-admin-f)]

Reviewed: https://review.opencontrail.org/36804
Committed: http://github.com/Juniper/contrail-controller/commit/391e2c0785f25c17b810963c841336fd64145827
Submitter: Zuul (<email address hidden>)
Branch: R4.0

commit 391e2c0785f25c17b810963c841336fd64145827
Author: Ignatious Johnson Christopher <email address hidden>
Date: Tue Oct 24 22:54:53 2017 -0700

Default to keystone v2 auth if auth_url is not

specified in contrail keystone auth config file,
to make it backward compatible to pre 3.2.6 builds.

Change-Id: I49886e5403ee051cbe5200d3da0dc4184b507ffc
Closes-Bug: 1727005