Boss-ingest

Fixed Bug:

* Removed delayed wait when requesting job credentials.

Implemented Enhancements:

* Added exponential backoff on retries when a client is requesting job status of an ingest job.

Implemented Enhancements:

* Added exponential backoff on retries when a client is trying to join an ingest job.

Fixed Bug:

* Stop client from creating tile index queue when doing volumetric ingest as that is handled by endpoint.

Implemented Enhancements:

* Added ability to volumetric ingest jobs using Princeton's CloudVolume data format.

Fixed Bug:

* Ingest-job will not be completed unless the upload-queue has zero messages in it. If an error occurs job will remain now and not close.


Implemented Enhancements:

* Added no_cache option to the intern plugin, this will increase the download speed be avoiding the cache.

Fixed Bug:

* Added x and y tile sizes to metadata of s3 tiles. This allows the ingest backend to create blank tiles when corrupt images are received.

Implemented Enhancements:

* Added in prep_ingest.py which will become a new script prep_ingest on pip install. It will create Collection, Experiment, Coordinate Frame, and Channel for you and add them to your ingest-client json config file.