Modify Operators to store and search

[dennyabrain]

Tickets: -

• Operators should support Media Factory functions #61
• Fix Panns audio cnn model library usage #73
• Cleanup downloaded files in the video operator #66
• For existing operators (imagevec, videvec, audiovec, md5 hash) standardise and document http libraries. #67
• Video Worker should handle disconnection to RabbitMQ #68
• All tests should use Media Factory functions #71
• Profile and reduce Audio Operator RAM usage #72
• Write a Worker for the audiovec Operator #74
• Write Benchmark tests for Audio Operators #75
• Update vidvec benchmark scripts #76
• update docker files to support graviton #77
• Update workers to report #78
• Add workers to search for media items #80
• worker for md5 hash operator #81

[dennyabrain]

• Audio search operator for indexing and searching
• Evaluation and load testing for video operator's indexing and storing
• Audio Operator : Profiling - RAM usage increases with file length. CNN module takes up memory. (problematic for > 10 min)