adding scripts for invocating MQTT sensors

[mailmahee]

adding scripts to invoke mqtt sensors to publish messages to kafka topics.

[mailmahee]

@gnumoreno @eyalgutkind @tzach - please review and merge.

[tzach]

Looks good to me
Are you planing to add Scylla to this system?
Please add running instructions to the README

[mailmahee]

@tzach this is part of a script which when run will generate MQTT messages that get published to Kafka - There are a set of instructions for spinning up Kafka connect and then simply connecting it to Scylla - all the instructions are captured in a blog we are planning on publishing.
https://docs.google.com/document/d/1DnVf-rVjMank5_rLQv1y8gucpPxvnX3CdFu9MLEuY60/edit?ts=5c116437

[tzach]

Thanks @mailmahee
@eyalgutkind @gnumoreno can you help review the code? (or at least validate its working)

[mailmahee]

@tzach - can you just go ahead merge it - have waited for more than a few days now...

[mailmahee]

@PeterCorless is blocked on this

[eyalgutkind]

@mailmahee just take the documentation of the usage from the blog and use it as the README.md