Cirrus: Update images + new automation library

Add support for new automation library version w/ `$DEBUG` fix
(ref: containers/automation_images#128) and added definitions
for commonly used Distro/version variables.

Signed-off-by: Chris Evich <cevich@redhat.com>

contrib/cirrus/lib.sh

@@ -36,11 +36,6 @@ fi
 # Managed by setup_environment.sh; holds task-specific definitions.
 if [[ -r "/etc/ci_environment" ]]; then source /etc/ci_environment; fi
 
-OS_RELEASE_ID="$(source /etc/os-release; echo $ID)"
-# GCE image-name compatible string representation of distribution _major_ version
-OS_RELEASE_VER="$(source /etc/os-release; echo $VERSION_ID | tr -d '.')"
-# Combined to ease some usage
-OS_REL_VER="${OS_RELEASE_ID}-${OS_RELEASE_VER}"
 # This is normally set from .cirrus.yml but default is necessary when
 # running under hack/get_ci_vm.sh since it cannot infer the value.
 DISTRO_NV="${DISTRO_NV:-$OS_REL_VER}"
@@ -261,6 +256,8 @@ remove_packaged_podman_files() {
         done
     done
 
+    # OS_RELEASE_ID is defined by automation-library
+    # shellcheck disable=SC2154
     if [[ "$OS_RELEASE_ID" =~ "ubuntu" ]]
     then
         LISTING_CMD="dpkg-query -L podman"

contrib/cirrus/setup_environment.sh

@@ -121,6 +121,9 @@ case "$OS_RELEASE_ID" in
         # CNI networking available.  Upgrading from one to the other is
         # not supported at this time.  Support execution of the upgrade
         # tests in F36 and later, by disabling Netavark and enabling CNI.
+        #
+        # OS_RELEASE_VER is defined by automation-library
+        # shellcheck disable=SC2154
         if [[ "$OS_RELEASE_VER" -ge 36 ]] && \
            [[ "$TEST_FLAVOR" != "upgrade_test" ]];
         then