installation script for OS Devuan (#95)

* adding devuan

* add devaun desc to README
make update and upgrade more noisy
correct path for devuan in pre-install

* some untested code for the source install - source installation is broken in Debian installation script and I have not debugged the problem. Focusing on the packaged version first.

devuan/resources/fail2ban/fusionpbx.conf

@@ -0,0 +1,25 @@
+# Fail2Ban configuration file
+#
+# Author: soapee01
+#
+
+[Definition]
+
+# Option:  failregex
+# Notes.:  regex to match the password failures messages in the logfile. The
+#          host must be matched by a group named "host". The tag "<HOST>" can
+#          be used for standard IP/hostname matching and is only an alias for
+#          (?:::f{4,6}:)?(?P<host>[\w\-.^_]+)
+# Values:  TEXT
+#
+#failregex = [hostname] FusionPBX: \[<HOST>\] authentication failed
+#[hostname] variable doesn't seem to work in every case. Do this instead:
+failregex = .* FusionPBX: \[<HOST>\] authentication failed for
+          = .* FusionPBX: \[<HOST>\] provision attempt bad password for
+
+# Option:  ignoreregex
+# Notes.:  regex to ignore. If this regex matches, the line is ignored.
+# Values:  TEXT
+#
+ignoreregex =
+