Reduces HDF flush frequency

Bumps reference to cov-model. Reinstitutes attribute dirty marks and
checking to reduce HDF flush frequency.
Merge pull request #529 from lukecampbell/master

Reduces HDF flush frequency
Bump epu pointer
Test and fix error handling in PD.cancel_process
Merge pull request #530 from labisso/pd_cancel_process

OOIION-703: Process dispatcher termination race
Patches coi_nightly test failure
Merge pull request #531 from lukecampbell/master

Patches coi_nightly test failure.
Removed debugging statements for perf analysis
Merge branch 'master' of github.com:ooici/coi-services
Fixes for OOIION-685: Policy changes for 2.0
Fixes for OOIION-683: Auto-accept for acquire resource
change negotiations extended attr to open_negotiations and closed_negotiations
added the restart mode to data process created
Merge pull request #532 from swarbhanu/data_process_restart_mode

Fixes OOIION-678 (Schedule data processes with correct restart mode of abnormal)
an import log debug corrected
Added test code that creates notifications for another user in test_activate_instrument.py
Using elastic search since the subscriptions attribute is calculated using UNS get_subscriptions() which needs elastic search
fixed test. test_activate_instrument working
Added test code to check that creating notification for new user leads to getting the computed notification attribute correctly done
Better test of PD/EEAgent container restart

Flushed out OOIION-705. Fix is in epu repo