CC-2735: Upgrade script for 1.9.3

- general upgrade script
- uncommented media monitor section in Monit config file

install_minimal/upgrades/airtime-1.9.3/airtime.conf.193

@@ -0,0 +1,23 @@
+[database]
+host = localhost
+dbname = airtime
+dbuser = airtime
+dbpass = airtime
+
+[rabbitmq]
+host = 127.0.0.1
+port = 5672
+user = guest
+password = guest
+vhost = /
+
+[general]
+api_key = AAA
+web_server_user = www-data
+airtime_dir = /usr/share/airtime/
+base_url = localhost
+base_port = 80
+
+[soundcloud]
+connection_retries = 3
+time_between_retries = 60