[#406] Publish recommendations to databus

[wujuu]

Deployment notice. Following ENV variables need to be properly provided for each environment, if the defaults are invalid (host, user and password will 100% be invalid):

• RS_DATABUS_HOST - the address of your JMS provider (default: 127.0.0.1)
• RS_DATABUS_USERNAME - your login to the JMS provider (default: admin, placeholder for the real password)
• RS_DATABUS_PASSWORD - your password to the JMS provider (default: admin, placeholder for the real password)
• RS_DATABUS_PORT - the port of your JMS provider (default: 61613)
• RS_DATABUS_SUBSCRIPTION_TOPIC - topic on which subscriber listens to jms (default: /topic/user_actions)
• RS_DATABUS_PUBLISH_TOPIC - name of the topic to publish the recommendations on the JMS host (default: /topic/recommendations)
• RS_DATABUS_SSL - whether to use ssl when connecting to jms (default: 1) (accepted values 0 or 1, yes or no)

Additionally the following ENV variables have been renamed:

• RS_SUBSCRIBER_HOST -> RS_DATABUS_HOST
• RS_SUBSCRIBER_PORT -> RS_DATABUS_PORT
• RS_SUBSCRIBER_PASSWORD -> RS_DATABUS_PASSWORD
• RS_SUBSCRIBER_USERNAME -> RS_DATABUS_USERNAME
• RS_SUBSCRIBER_TOPIC-> RS_DATABUS_SUBSCRIPTION_TOPIC
• RS_SUBSCRIBER_SUBSCRIPTION_ID -> RS_DATABUS_SUBSCRIPTION_ID
• RS_SUBSCRIBER_SSL -> RS_DATABUS_SSL
• TEST_RS_SUBSCRIBER_HOST -> TEST_RS_DATABUS_HOST
• TEST_RS_SUBSCRIBER_PORT -> TEST_RS_DATABUS_PORT
• TEST_RS_SUBSCRIBER_USERNAME -> TEST_RS_DATABUS_USERNAME
• TEST_RS_SUBSCRIBER_PASSWORD -> TEST_ RS_DATABUS_PASSWORD
• TEST_RS_SUBSCRIBER_TOPIC -> TEST_RS_DATABUS_SUBSCRIPTION_TOPIC

JMS host, port, user, password and ssl are shared between the old subscription JMS cli and new JMS publisher.

Tested on local env.

[Michal-Kolomanski]

After merging, please update @wziajka about changes in the deployment process