Zlib & Json Schema Validation

Ticket:

Resolves LB591 and LB592

Description of Change:

• Added Zlib decompression for config and states
• Added Json Schema validation for fetching devices from mock device broker

How to Test:

1. Add a mock device into mongodb 'mock_devices' collection that doesn't match the JSON schema.
2. Try searching for the added device in config manager
   • Expect device to be unavailable.
3. Load a device from mock device broker with a valid schema validation.
4. Device should be loaded with data decompressed.