Links to reno are incorrect

[Stephen Finucane]

There are multiple links to reno in the "release notes" section of the contributor guide:

https://docs.openstack.org/nova/stein/contributor/releasenotes.html

These are versioned links but reno is unversioned. This is resulting in breaking links when on stable branches like the above.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/stein
Review: https://review.opendev.org/662025

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/661967
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=8b9dad0b636e4f6bdd8e1eee0f1a8a00c1ffd2b7
Submitter: Zuul
Branch: master

commit 8b9dad0b636e4f6bdd8e1eee0f1a8a00c1ffd2b7
Author: Stephen Finucane <email address hidden>
Date: Wed May 29 13:39:06 2019 +0100

    docs: Don't version links to reno docs

    reno doesn't have stable branches and doesn't version its documentation.
    There's no point versioning our links to same.

    Change-Id: Id782d3b11715bc3211e7952fb01b42a659d06e36
    Closes-Bug: #1830926
    Signed-off-by: Stephen Finucane <email address hidden>

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/662025
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=dc7eb62c27dca29731c46fed531de3ce36b49308
Submitter: Zuul
Branch: stable/stein

commit dc7eb62c27dca29731c46fed531de3ce36b49308
Author: Stephen Finucane <email address hidden>
Date: Wed May 29 13:39:06 2019 +0100

    docs: Don't version links to reno docs

    reno doesn't have stable branches and doesn't version its documentation.
    There's no point versioning our links to same.

    Change-Id: Id782d3b11715bc3211e7952fb01b42a659d06e36
    Closes-Bug: #1830926
    Signed-off-by: Stephen Finucane <email address hidden>
    (cherry picked from commit 8b9dad0b636e4f6bdd8e1eee0f1a8a00c1ffd2b7)

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/rocky
Review: https://review.opendev.org/662178

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/nova 19.0.1 release.

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/662178
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=3b1f1e356fecdd7e3fc120d8c9aa0213f7cd02e3
Submitter: Zuul
Branch: stable/rocky

commit 3b1f1e356fecdd7e3fc120d8c9aa0213f7cd02e3
Author: Stephen Finucane <email address hidden>
Date: Wed May 29 13:39:06 2019 +0100

    docs: Don't version links to reno docs

    reno doesn't have stable branches and doesn't version its documentation.
    There's no point versioning our links to same.

    Conflicts:
     doc/source/conf.py

    NOTE(stephenfin): Conflict is because there are no links to the TripleO
    docs here so the comment I modified on previous branches doesn't exist
    here. We also have to modify the 'contributor/placement.rst' document
    since that has been removed on master as part of the placement
    extraction.

    Change-Id: Id782d3b11715bc3211e7952fb01b42a659d06e36
    Closes-Bug: #1830926
    Signed-off-by: Stephen Finucane <email address hidden>
    (cherry picked from commit 8b9dad0b636e4f6bdd8e1eee0f1a8a00c1ffd2b7)
    (cherry picked from commit dc7eb62c27dca29731c46fed531de3ce36b49308)

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/nova 18.2.1 release.

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/nova 20.0.0.0rc1 release candidate.