TT#45613 Print hostname for every line where ngcpcfg is executed

It is necessary to improve navigation into long 'ngcpcfg push all'
output on huge customer's systems. Requested by Sipwise Ops team.

Previously:
2018-10-11 10:48:40: Generating /etc/update-motd.d/05-maintenance-mode: OK
2018-10-11 10:48:40: Executing postbuild for /etc/update-motd.d/05-maintenance-mode
2018-10-11 10:48:40: Generating /etc/update-motd.d/10-heartbeat: OK
2018-10-11 10:48:40: Executing postbuild for /etc/update-motd.d/10-heartbeat
2018-10-11 10:48:40: Generating /etc/update-motd.d/20-sysinfo: OK

Now:
2018-10-11 11:55:28 web01a: Generating /etc/systemd/system/redis-server.service: OK
2018-10-11 11:55:28 web01a: Generating /etc/systemd/system/rsyslog.service.d/override.conf: OK
2018-10-11 11:55:28 web01a: Generating /etc/systemd/system/slapd.service.d/override.conf: OK
2018-10-11 11:55:28 web01a: Generating /etc/systemd/system/slapd.service: OK
2018-10-11 11:55:28 web01a: Generating /etc/systemd/system/snmpd.service.d/override.conf: OK

Change-Id: I3035293b95f64033005cc5f8d031dbbfac1dcc33

functions/main

@@ -15,7 +15,7 @@ console_output() {
 
   # indent depending on number of characters in date output
   timestamp_replacementchars="$(printf -- "%s: " "$timestamp" | sed 's/./ /g')"
-  printf -- "$timestamp: $*"
+  printf -- "$timestamp $HNAME: $*"
 }
 # }}}