Neutron tempest plugin zuul job definitions uses deprecated regex syntax

[Slawek Kaplonski]

Details about deprecation are in https://<email address hidden>/thread/C2NADWASR3BFJI3J45ZCNKOZBJETF6NE/

We have issue in the neutron-tempest-plugin jobs:

Zuul encountered a deprecated syntax while parsing its configuration
in the repo openstack/neutron-tempest-plugin on branch master. The
problem was:

  All regular expressions must conform to RE2 syntax, but an
  expression using the deprecated Perl-style syntax has been detected.
  Adjust the configuration to conform to RE2 syntax.

  The RE2 syntax error is: invalid perl operator: (?!

The problem appears in the following job stanza:

  job:
      name: neutron-tempest-plugin-base-nested-switch
      parent: neutron-tempest-plugin-base
      abstract: true
      branches: ^(?!stable/(train|ussuri|victoria|wallaby|xena|yoga|zed)).*$
      # Comment nodeset and vars to switch back to non nested nodes
      nodeset: neutron-nested-virt-ubuntu-jammy
      vars: &nested_virt_vars
        devstack_localrc:
          LIBVIRT_TYPE: kvm
          LIBVIRT_CPU_MODE: host-passthrough
          CIRROS_VERSION: 0.6.2
          DEFAULT_IMAGE_NAME: cirros-0.6.2-x86_64-disk
          DEFAULT_IMAGE_FILE_NAME: cirros-0.6.2-x86_64-disk.img

  # Base nested switch job for yoga and zed

  in "openstack/neutron-tempest-plugin/zuul.d/base-nested-switch.yaml@master", line 22, column 3

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/c/openstack/neutron-tempest-plugin/+/896188

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/openstack/neutron-tempest-plugin/+/896188
Committed: https://opendev.org/openstack/neutron-tempest-plugin/commit/97409c6992f87f323e135933945ecf8bc03eece3
Submitter: "Zuul (22348)"
Branch: master

commit 97409c6992f87f323e135933945ecf8bc03eece3
Author: yatinkarel <email address hidden>
Date: Fri Sep 22 11:41:17 2023 +0530

    Use RE2 compatible regex for branches

    Zuul has deprecated the usage of negative regex[1],
    this patch switches the branches regex to the supported
    one.

    [1] https://zuul-ci.org/docs/zuul/latest/project-config.html#regex

    Closes-Bug: #2037034
    Change-Id: I66dcb56ab5ba9cfdefbeb25f1d01871ea0d0d362

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/neutron-tempest-plugin 2.6.0 release.