Drop Bionic support

Since victoria cycle, we have moved upstream testing to
Ubuntu Focal (20.04) and so does no Bionic distro in
Xena cycle testing runtime[1]. Grenade jobs also started
running on Focal since victoria was released.

Only thing left was legacy jobs which were not migrated to
Ubuntu Focal in Victoria and as per another community-wide
goal[2], all the lgeacy jobs were suppsoed to be migrated
to zuulv3 native jobs in victoria cycle itself. One of the
pending job was in nova (nova-grenade-multinode) which is also
migrated to zuulv3 native now
- https://review.opendev.org/c/openstack/nova/+/778885

If there is any job running on bionic, we strongly recommend
to migrate it to Ubuntu Focal.

[1] https://governance.openstack.org/tc/reference/runtimes/xena.html
[2] https://governance.openstack.org/tc/goals/selected/victoria/native-zuulv3-jobs.html

Change-Id: I39e38e4a6c2e52dd3822c9fdea354258359a9f53

.zuul.yaml

@@ -584,16 +584,6 @@
     voting: false
     timeout: 9000
 
-- job:
-    name: devstack-platform-bionic
-    parent: tempest-full-py3
-    description: Ubuntu Bionic platform test
-    nodeset: openstack-single-node-bionic
-    voting: false
-    vars:
-      devstack_localrc:
-        CINDER_ISCSI_HELPER: tgtadm
-
 - job:
     name: devstack-async
     parent: tempest-full-py3
@@ -695,7 +685,6 @@
         - devstack-ipv6
         - devstack-platform-fedora-latest
         - devstack-platform-centos-8
-        - devstack-platform-bionic
         - devstack-async
         - devstack-multinode
         - devstack-unit-tests

lib/apache

@@ -93,9 +93,6 @@ function install_apache_uwsgi {
 
     if is_ubuntu; then
         local pkg_list="uwsgi uwsgi-plugin-python3 libapache2-mod-proxy-uwsgi"
-        if [[ "$DISTRO" == 'bionic' ]]; then
-            pkg_list="${pkg_list} uwsgi-plugin-python"
-        fi
         install_package ${pkg_list}
     elif is_fedora; then
         # Note httpd comes with mod_proxy_uwsgi and it is loaded by

lib/cinder

@@ -91,12 +91,6 @@ CINDER_VOLUME_CLEAR=$(echo ${CINDER_VOLUME_CLEAR} | tr '[:upper:]' '[:lower:]')
 # Default to lioadm
 CINDER_ISCSI_HELPER=${CINDER_ISCSI_HELPER:-lioadm}
 
-# Bionic needs to default to tgtadm until support is dropped within devstack
-# as the rtslib-fb-targetctl service doesn't start after installing lioadm.
-if is_ubuntu && [[ "$DISTRO" == "bionic" ]]; then
-    CINDER_ISCSI_HELPER=tgtadm
-fi
-
 # EL and SUSE should only use lioadm
 if is_fedora || is_suse; then
     if [[ ${CINDER_ISCSI_HELPER} != "lioadm" ]]; then

stack.sh

@@ -227,7 +227,7 @@ write_devstack_version
 
 # Warn users who aren't on an explicitly supported distro, but allow them to
 # override check and attempt installation with ``FORCE=yes ./stack``
-SUPPORTED_DISTROS="bionic|focal|f31|f32|opensuse-15.2|opensuse-tumbleweed|rhel8"
+SUPPORTED_DISTROS="focal|f31|f32|opensuse-15.2|opensuse-tumbleweed|rhel8"
 
 if [[ ! ${DISTRO} =~ $SUPPORTED_DISTROS ]]; then
     echo "WARNING: this script has not been tested on $DISTRO"

tools/fixup_stuff.sh

@@ -59,43 +59,6 @@ function fixup_keystone {
     fi
 }
 
-# Ubuntu Repositories
-#--------------------
-# Enable universe for bionic since it is missing when installing from ISO.
-function fixup_ubuntu {
-    if [[ "$DISTRO" != "bionic" ]]; then
-        return
-    fi
-
-    # This pulls in apt-add-repository
-    install_package "software-properties-common"
-
-    # Enable universe
-    sudo add-apt-repository -y universe
-
-    if [[ -f /etc/ci/mirror_info.sh ]] ; then
-        # If we are on a nodepool provided host and it has told us about
-        # where we can find local mirrors then use that mirror.
-        source /etc/ci/mirror_info.sh
-        sudo apt-add-repository -y "deb $NODEPOOL_UCA_MIRROR bionic-updates/ussuri main"
-    else
-        # Enable UCA:ussuri for updated versions of QEMU and libvirt
-        sudo add-apt-repository -y cloud-archive:ussuri
-    fi
-    REPOS_UPDATED=False
-    apt_get_update
-
-    # Since pip10, pip will refuse to uninstall files from packages
-    # that were created with distutils (rather than more modern
-    # setuptools).  This is because it technically doesn't have a
-    # manifest of what to remove.  However, in most cases, simply
-    # overwriting works.  So this hacks around those packages that
-    # have been dragged in by some other system dependency
-    sudo rm -rf /usr/lib/python3/dist-packages/httplib2-*.egg-info
-    sudo rm -rf /usr/lib/python3/dist-packages/pyasn1_modules-*.egg-info
-    sudo rm -rf /usr/lib/python3/dist-packages/PyYAML-*.egg-info
-}
-
 # Python Packages
 # ---------------
 
@@ -194,7 +157,6 @@ function fixup_ovn_centos {
 
 function fixup_all {
     fixup_keystone
-    fixup_ubuntu
     fixup_fedora
     fixup_suse
 }