Metrics logger mongo replica support
Removed debug line
Merge pull request #150 from datacratic/metrics_looger_mongo_replica_support

Metrics looger mongo replica support
fixed logs new line
PLAT-755: refactored to enable exponential backoff for GET requests
PLAT-757: HttpClient: removed the need for curl debug hooks, by enabling test service to return headers

    This reverts commit cdc53a79364f7c651b6c96a841eccd0bafad8467.
[NON PROD] Modified the FileWriter to allow append mode
Merge pull request #154 from datacratic/logging_sys

Est-ce que cette façon de faire est la plus optimale pour ajouter un mode "append"
JsonRestProxy: typo in method name (TRIVIAL)
JsonRestProxy: return error responses back to the caller when unrecoverable
PLAT-760: split HttpClient into an interface class and the HttpClientV1 implementation class
Added manual test for the logger metrics
epoll_test: added test suite for testing assumptions about epoll api
fs_utils: exception safety in utility functions (TRIVIAL)
PLAT-765: implemented "operator +" for TimePeriod (TRIVIAL)
PLAT-766: test answers Jeremy's question

  J: Does TimePeriod t; t += "1s"; work?
  W: Let's ask our tests
  T: Yes, it does!
added binPath variable to launcher so we can specify where the binaries are
HttpClient now uses 1024 maximum http connections by default
http_client_test: following "numParallel" changed from 4 to 1024, adapted the stress test to specify 128 concurrent connections instead
Make stress test run in a similar context to the one prior to the change to "numParallel"