Replace uvicorn access log with our logger

[Hedingber]

This PR has 2 targets:

• Replace uvicorn's access logger with our logger
• Filter logs of successful /healthz calls (cause soon it will be used periodically by k8s readiness probe)

In FastAPI the way to cause code to do something (logging) on each request and response is writing a middleware.
I wrote a middleware to log before request and after response and therefore we can disable uvicorn's access log

Here are some examples of what will be logged now:

1. Successful request to /healthz endpoint

• Before:

INFO:     10.200.0.41:33898 - "GET /api/healthz HTTP/1.0" 200 OK

• After: nothing will be logged

2. Failed request to any endpoint (failed with handled exception)

• Before:

INFO:     10.200.0.26:52330 - "GET /api/projects/bla HTTP/1.0" 405 Method Not Allowed

• After:

> 2020-09-28 01:37:16,938 [info] Received request: {'method': 'GET', 'client_address': '10.200.0.26:52330', 'http_version': '1.0', 'request_id': 'dce068ff-9502-4c98-beaa-e51249725a05', 'uri': '/api/projects/bla'}
> 2020-09-28 01:37:16,938 [info] Sending response: {'status_code': 405, 'request_id': 'dce068ff-9502-4c98-beaa-e51249725a05', 'uri': '/api/projects/bla', 'method': 'GET'}

3. Failed request to any endpoint (failed with unhandeled exception)

• Before:

INFO:     10.200.0.26:58126 - "GET /api/project/bla HTTP/1.0" 500 Internal Server Error

• After:

> 2020-09-28 01:41:59,653 [info] Received request: {'method': 'GET', 'client_address': '10.200.0.26:58126', 'http_version': '1.0', 'request_id': '025bc236-b511-4f16-8d05-016a58094d1a', 'uri': '/api/project/bla'}
> 2020-09-28 01:41:59,655 [warning] Request handling failed. Sending response: {'status_code': 500, 'request_id': '025bc236-b511-4f16-8d05-016a58094d1a', 'uri': '/api/project/bla', 'method': 'GET'}

4. Successful request to any endpoint except /healthz

• Before:

INFO:     10.200.0.41:33898 - "GET /api/projects?full=true HTTP/1.0" 200 OK

• After:

> 2020-09-28 01:36:04,587 [info] Received request: {'method': 'GET', 'client_address': '10.200.0.26:50880', 'http_version': '1.0', 'request_id': '8e7a5c9b-becd-41c2-8788-e0b221e61dd5', 'uri': '/api/projects?full=true'}
> 2020-09-28 01:36:04,596 [info] Sending response: {'status_code': 200, 'request_id': '8e7a5c9b-becd-41c2-8788-e0b221e61dd5', 'uri': '/api/projects?full=true', 'method': 'GET'}

[omesser]

Since mlrun has its own logger now, access logs should be turned off imo.
Mixed logging with different formats are very confusing and will be problemtic to machine-parse if we ever want to do that

[omesser]

Suggested change

	logger.info(
	logger.debug(

[omesser]

Suggested change

	logger.info(
	logger.debug(

[omesser]

Suggested change

	def get_client_addr(scope):
	def get_client_address(scope):