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Resolve "Integrate gronkd into Cobalt"

Closes #49

See merge request !28

Macros are a bit different and SLES 12 can leverage systemd

Resolve "Increase size of job_data.exit_status to integer"

Closes #61

See merge request !27

Resolve "Flip bgqsystem backfiller sign"

See merge request !23

There was a change in the call and a behavior change to not try to
redrain blocks.  This was what the originally intended behavior was.

Uncovered another bug while working on this, old behavior masked it, but
there was a way to get a block to ignore the scheduled flag as well.

Fix for nodes getting hung up in cleanup-pending state

A well (or poorly depending on how you look at it) qdel could cause
Cobalt to put a node into cleanup but never complete the cleanup due to
there being no ALPS backend reservation to clean up.  This would clear
if there were no jobs currently running, however, it would hang nodes
otherwise.

Closes #56

See merge request !26

A well (or poorly depending on how you look at it) qdel could cause
Cobalt to put a node into cleanup but never complete the cleanup due to
there being no ALPS backend reservation to clean up.  This would clear
if there were no jobs currently running, however, it would hang nodes
otherwise.

Adding in build files for the RESERVATION_SUMMARY view for CDB

Adding in templates and build script for the reservation summary view from Gabe West.
Closes #52

See merge request !24

Qsub path can now be specified for eLogin qsubs.

This prevents us from getting a unwrapped qsub.py or the qsub being in a
different location on the mom from the eLogin host when using qsub -I
from a eLogin node on Cray systems.

Closes #54

See merge request !25

This prevents us from getting a unwrapped qsub.py or the qsub being in a
different location on the mom from the eLogin host when using qsub -I
from a eLogin node on Cray systems.

Fixing a possilbe pid leak if 'apbasil' task cleanup interrupted

There was the possiblity of losign a PID if child cleanup was
interrupted.  This ensures retries until the child process is actually
dead.

Closes #46

See merge request !21

If the child fetch succeeds but cleanup fails, make sure we use the
intially fetched data, rahter than replacing it with the now potentially
lost child data.

Resolve "Restart failure with system_script_forker using old statefile"

Closes #53

See merge request !22

After discussion the current algorithm for determining backfill time
needs to be replaced and needs to depend on which blocks are selected
for draining.  This is a commit for the current algorithm's optimistic
and pessimistic backfill modes.

New tests pending, but the optimistic mode backfiller does appear to be
working properly.  Old behavior is preserved and may be enabled by
setting the mode to pessimistic.

Old versions of the forker do not have use_stdout_string that can casue
_wait() to fail.  Getting out of this would require deleting the
statefile and restarting clean.

To prevent that, the startup is being modified to add those key
variables and initalizing them to being "unused".