Rebase to latest upstream; version tag instead of git commit hash
    
    Use version tag in Source instead of commit hash where possible.
    I think the network role prefers to do "proper" releases, and
    auto-maintenance is untagged.
    
    In addition, the following changes were made:
    
    ha_cluster - add pacemaker resources configuration
      Resolves: rhbz#1963283
    ha_cluster - code cleanup
      Resolves: rhbz#1970666
    Postfix RHEL system role README.md missing variables under the "Role Variables" section
      Resolves: rhbz#1961858
    logging README.html examples are rendered incorrectly
      Resolves: rhbz#1962374
    make postfix role idempotent - round 2
      Resolves: rhbz#1960375
    selinux task for semanage says Fedora in name but also runs on RHEL/CentOS 8
      Resolves: rhbz#1966681
    metrics role task to enable logging for targeted hosts not working
      Resolves: rhbz#1967335
    network - Add 'auto_gateway' option
      Resolves: rhbz#1897565
    network - Only show stderr_lines by default
      Resolves: rhbz#1970666
    storage - LVMVDO support
      Resolves: rhbz#1882475
    storage - fix several linter issues
      Resolves: rhbz#1970666
    ssh - Fix variable precedence when invoked through roles
      Resolves: rhbz#1966711
    ssh - Update configuration options list for OpenSSH 8.6
      Resolves: rhbz#1970666
    sshd - Fix variable precedence when invoked through roles
      Resolves: rhbz#1966711
    sshd - Update configuration options list for OpenSSH 8.6
      Resolves: rhbz#1970666
    sshd - support for appending a snippet to configuration file
      Resolves: rhbz#1970642
    timesync - add NTS support
      Resolves: rhbz#1970664
    timesync - rebase to latest
      Resolves: rhbz#1970666
    nbde_client - rebase to latest
      Resolves: rhbz#1970666