ci: rollout several recent changes to CI testing

* Pass in a YAML true value as `__bootc_validation: true` using
the --extra-vars option to ensure that `__bootc_validation` is
treated as a boolean and not a string value.

`-e "__bootc_validation: true"`

You can also use JSON format:

`-e '{"__bootc_validation": true}'`

but YAML is simpler in this case.

* Use tox-lsr version 3.11.1

* Ensure the citest bad comment works when the test was cancelled in
addition to the failure case.

* Update contributing.md documentation

* Update number of nodes to use in testing farm, if needed

* remove unnecessary ansible-lint skips

Signed-off-by: Rich Megginson <rmeggins@redhat.com>

Author: richm

.github/workflows/qemu-kvm-integration-tests.yml

@@ -41,8 +41,6 @@ jobs:
           - { image: "fedora-42", env: "container-ansible-core-2.17" }
           - { image: "fedora-41-bootc", env: "container-ansible-core-2.17" }
           - { image: "fedora-42-bootc", env: "container-ansible-core-2.17" }
-          - { image: "leap-15.6", env: "qemu-ansible-core-2.18" }
-
 
     env:
       TOX_ARGS: "--skip-tags tests::infiniband,tests::nvme,tests::scsi"
@@ -64,7 +62,6 @@ jobs:
           case "$image" in
           centos-*) platform=el; platform_version=el"${image#centos-}" ;;
           fedora-*) platform=fedora; platform_version="${image/-/}" ;;
-          leap-*) platform=leap; platform_version="${image}" ;;
           esac
           supported=
           if yq -e '.galaxy_info.galaxy_tags[] | select(. == "'${platform_version}'" or . == "'${platform}'")' meta/main.yml; then