The A-B refactor (#15075) moved the backup to create_backup but kept the
old hand-written restore, which reads $BACKUP_DIR. Nothing sets it any
more, so the first restore cp failed after the install dir was wiped:
the update aborted with Tomcat stopped and the config left in
/opt/apache-tomcat.backup.
Restore conf and webapps with restore_backup, which also removes the
store. lib gets a store of its own so only the jars the new release lacks
(JDBC drivers and the like) are copied back; restoring it whole would
put the old Tomcat jars over the new ones.
Co-authored-by: Matt Daleo <12395090+mazelado@users.noreply.github.com>
Co-authored-by: Claude Sonnet 5.5 <noreply@anthropic.com>
