update to 1.8.11
    
    - major changes & fixes:
      - when running a command in the background, sudo will now forward
        SIGINFO to the command
      - the passwords in ldap.conf and ldap.secret may now be encoded in base64.
      - SELinux role changes are now audited. For sudoedit, we now audit
        the actual editor being run, instead of just the sudoedit command.
      - it is now possible to match an environment variable's value as well as
        its name using env_keep and env_check
      - new files created via sudoedit as a non-root user now have the proper group id
      - sudoedit now works correctly in conjunction with sudo's SELinux RBAC support
      - it is now possible to disable network interface probing in sudo.conf by
        changing the value of the probe_interfaces setting
      - when listing a user's privileges (sudo -l), the sudoers plugin will now prompt
        for the user's password even if the targetpw, rootpw or runaspw options are set.
      - the new use_netgroups sudoers option can be used to explicitly enable or disable
        netgroups support
      - visudo can now export a sudoers file in JSON format using the new -x flag
    - added patch to read ldap.conf more closely to nss_ldap
    - require /usr/bin/vi instead of vim-minimal
    - include pam.d/system-auth in PAM session phase from pam.d/sudo
    - include pam.d/sudo in PAM session phase from pam.d/sudo-i