[SPEC]: self_contained_coordinator remembers last commit processed and is able to continue from where it left off.

[slice4e]

Currently, if the self-contained-coordinator needs to be restarted, it looses track of what work was completed testing needs to be re-triggered. Re-triggering the testing, creates more work for self-contained-coordinators on other nodes as well.

An improvement would be:
Once a self-contained-coordinator is registered, it remembers the last commit executed in a temp file. When the container is restarted due to bug fixes or new features, etc. it has to option to continue from where it left off, instead of forcing everyone to restart work.