MT#60820 Drop support for releases earlier than mr7.5

This gets rid of anything older than Debian buster.

Change-Id: Ib26014306cdd7c7427c356ccacb4e0b12733e0a0

ec2-create-ce

@@ -209,18 +209,9 @@ wait_for_ssh() {
 }
 
 get_status() {
-   case "${NGCP_VERSION}" in
-    2.*|3.*|mr[3-6].*|mr7.[0-4]*)
-      if ssh_wrapper "grep 'System configured' -q /etc/sipwise_ngcp_version"; then
-        echo "finished"
-      fi
-    ;;
-    *)
-      local status=''
-      status=$(wget --timeout=30 -q -O- "${HOSTNAME}:4242/status" || true)
-      echo "${status}"
-    ;;
-  esac
+  local status=''
+  status=$(wget --timeout=30 -q -O- "${HOSTNAME}:4242/status" || true)
+  echo "${status}"
 }
 
 wait_for_configuration() {
@@ -427,17 +418,6 @@ fi
 
 AMI_DESCRIPTION="Official sip:provider CE AMI for release ${NGCP_VERSION} [${DATE_STRING}]"
 
-case "${NGCP_RELEASE}" in
-  2.*|3.*|mr3.*|mr4.*|mr5.*|mr6.0*|mr6.1*)
-    echo "*** ngcp release ${NGCP_RELEASE} doesn't support systemd"
-    SYSTEMD_SUPPORT=false
-    ;;
-  *)
-    echo "*** ngcp release ${NGCP_RELEASE} supports systemd"
-    SYSTEMD_SUPPORT=true
-    ;;
-esac
-
 USER_DATA_FILE="$(mktemp)"
 cat > "${USER_DATA_FILE}" << EOF
 #!/bin/bash
@@ -454,37 +434,11 @@ if [ -f /etc/apt/sources.list.d/debian.sources ] && grep -q -- '-backports' /etc
   echo "backports is unexpected, disabling from /etc/apt/sources.list.d/debian.sources"
   sed -i -E 's/ [a-z]+-backports//' /etc/apt/sources.list.d/debian.sources
 fi
-
-if [ "${SYSTEMD_SUPPORT}" = "false" ] && [ -d /run/systemd/system ] ; then
-  echo "Switching from systemd to sysvinit (pre-reboot)"
-  apt update
-  apt install --yes sysvinit-core
-  echo "Rebooting now to switch from systemd to sysvinit"
-  #Temporary crontab to restart installer after reboot
-  (crontab -l ; echo "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin") | crontab -
-  (crontab -l ; echo "@reboot FORCE=yes /usr/sbin/ngcp-installer 2>&1 | tee -a /var/log/ngcp-installer-debug.log") | crontab -
-  reboot
-fi
-
-# workaround for mr4.2.1
-export HOME=/root/
 EOF
 
 
 
-init_configuration=false
-case "${NGCP_RELEASE}" in
-  2.8|3.*|mr[3-5].*|mr6.[0-4]*)
-    echo "*** ngcp release ${NGCP_RELEASE} doesn't have configuration tools"
-    ;;
-  *)
-    echo "*** ngcp release ${NGCP_RELEASE} has configuration tools"
-    init_configuration=true
-    ;;
-esac
-
-if "${init_configuration}" ; then
-  cat >> "${USER_DATA_FILE}" << EOF
+cat >> "${USER_DATA_FILE}" << EOF
 sed_regexp=''
 sed_regexp+='s/^(export FORCE)=.+$/\1=yes/;'
 sed_regexp+='s/^(export DHCP)=.+$/\1=true/;'
@@ -503,12 +457,6 @@ while [[ "\${attempt}" -lt "\${max_attempt}" ]]; do
 done
 exit \${rc}
 EOF
-else
-  cat >> "${USER_DATA_FILE}" << EOF
-FORCE=yes ngcp-installer 2>&1 | tee -a /var/log/ngcp-installer-debug.log
-[[ -f /tmp/ngcp-installer.log ]] && cp /tmp/ngcp-installer.log /var/log/ngcp-installer.log
-EOF
-fi
 
 echo "*** Generated the following user-data file:"
 cat "${USER_DATA_FILE}"
@@ -580,10 +528,7 @@ HOSTNAME="$(aws ec2 describe-instances --region "${AWS_REGION}" --filter "Name=i
 
 retry=360 # up to 30 minutes
 FINISHED_NGCP_CE_INSTALLATION=false
-install_log_file='/var/log/ngcp-installer-debug.log'
-if "${init_configuration}" ; then
-  install_log_file='/var/log/ngcp-installer.log'
-fi
+install_log_file='/var/log/ngcp-installer.log'
 while [ "${FINISHED_NGCP_CE_INSTALLATION}" != "true" ] && [ ${retry} -ne 0 ] ; do
   ssh_wrapper "grep -q 'Installation finished. Thanks for choosing' ${install_log_file}"
   RC=$?
@@ -636,17 +581,15 @@ else
 fi
 
 success=true
-if "${init_configuration}"; then
-  echo "Configuring system..."
-  ssh_wrapper "sudo screen -dm bash -c 'ngcp-initial-configuration'"
-  wait_for_configuration || success=false
-  echo "Trying to retrieve ngcp-installer.log file after configuration"
-  scp \
-    -o "StrictHostKeyChecking=no" \
-    -o "UserKnownHostsFile=/dev/null" \
-    -i "${KEY_FILE}" \
-    "admin@${HOSTNAME}":/var/log/ngcp-installer\*log ./ || true
-fi
+echo "Configuring system..."
+ssh_wrapper "sudo screen -dm bash -c 'ngcp-initial-configuration'"
+wait_for_configuration || success=false
+echo "Trying to retrieve ngcp-installer.log file after configuration"
+scp \
+  -o "StrictHostKeyChecking=no" \
+  -o "UserKnownHostsFile=/dev/null" \
+  -i "${KEY_FILE}" \
+  "admin@${HOSTNAME}":/var/log/ngcp-installer\*log ./ || true
 
 # now check for available ssh connection and nginx listening on port 1443
 retry=120 # up to 10 minutes