fail2ban-users: Sebastian Arcus - Detect device auth failures on Asterisk 11
https://github.com/fail2ban/fail2ban/issues/306

Fix regex for latest dropbear (keep backwards compatibility). Add test case logfiles.

Signed-off-by: Jamyn Shanley <jshanley@gmail.com>
minor: consistent indentation in dropbear.conf
ENH: hardened added dropbear failregex to avoid trailing .* and enclose username in ''
Merge branch 'enh/asterisk_and_dropbear_filters'

* enh/asterisk_and_dropbear_filters:
  ENH: hardened added dropbear failregex to avoid trailing .* and enclose username in ''
  minor: consistent indentation in dropbear.conf
  https://github.com/fail2ban/fail2ban/issues/306
  fail2ban-users: Sebastian Arcus - Detect device auth failures on Asterisk 11