Adds CovDr to DirectCoverageAccess

Adds get_coverage_doctor and run_coverage_doctor functions to DirectCoverageAccess.  Facilitate getting an instance of CoverageDoctor and automatically running CoverageDoctor (analyze/repair) on a coverage.
Adds simple_time kwarg to Streamer

simple_time kwarg sets the time values to incremental values rather than 'now' values
Relocates & extends DirectCoverageAccess tests

- adds test_direct_coverage_utils module
- moves tests from test_dm_end_2_end:
  - test_upload_calibration_coefficients
  - test_manual_data_upload
  - cleans up helper functions
- adds tests:
  - test_dca_ingestion_pause_resume
  - test_run_coverage_doctor
Relocates & extends DirectCoverageAccess tests

- adds test_direct_coverage_utils module
- moves tests from test_dm_end_2_end:
  - test_upload_calibration_coefficients
  - test_manual_data_upload
  - cleans up helper functions
- adds tests:
  - test_dca_ingestion_pause_resume
  - test_run_coverage_doctor
Merge pull request #1162 from blazetopher/more_dcu_work

More dcu work