Removed deprecated and duplicated code, enhanced logs and retry

What's new

Enhanced log

• parameters of requests are now dynamically handled
• headers defined in session are now shown in logs
• response is logged if standard python/robotframework debug level is enabled (might be verbose)

Retry on specific status codes

• is now possible to retry the request even for specific response code (eg 502, 503)
• it is also possible to specify for which method the retry is allowed

This release covered some maintenance on build and tests.

• deprecated keywords have been removed
• duplicated code have been managed
• documentation have been updated a bit