Remove Fedora 30 support

Fedora 30 hit EOL earlier in the year and can be removed from devstack.

https://en.wikipedia.org/wiki/Fedora_version_history#Version_history

Change-Id: I47452700d520a544c93c0c187143ec763f026612

lib/lvm

@@ -124,12 +124,6 @@ function init_lvm_volume_group {
     local vg=$1
     local size=$2
 
-    # Start the lvmetad on f30 (dropped from f31) or SUSE
-    if [[ $DISTRO =~ f30 ]] || is_suse; then
-        # services is not started by default
-        start_service lvm2-lvmetad
-    fi
-
     # Start the tgtd service on Fedora and SUSE if tgtadm is used
     if  is_fedora || is_suse  && [[ "$CINDER_ISCSI_HELPER" = "tgtadm" ]]; then
         start_service tgtd

lib/nova

@@ -293,8 +293,8 @@ function configure_nova {
             fi
         fi
 
-        if is_fedora && [[ $DISTRO =~ f3[0-1] ]]; then
-            # For f30 and f31 use the rebased 2.1.0 version of the package.
+        if is_fedora && [[ $DISTRO =~ f31] ]]; then
+            # For f31 use the rebased 2.1.0 version of the package.
             sudo dnf copr enable -y lyarwood/iscsi-initiator-utils
             sudo dnf update -y
         fi

stack.sh

@@ -221,7 +221,7 @@ 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``
-if [[ ! ${DISTRO} =~ (bionic|focal|f30|f31|f32|opensuse-15.0|opensuse-15.1|opensuse-tumbleweed|rhel8) ]]; then
+if [[ ! ${DISTRO} =~ (bionic|focal|f31|f32|opensuse-15.0|opensuse-15.1|opensuse-tumbleweed|rhel8) ]]; then
     echo "WARNING: this script has not been tested on $DISTRO"
     if [[ "$FORCE" != "yes" ]]; then
         die $LINENO "If you wish to run this script anyway run with FORCE=yes"