[WIP] Add support for expiration update

[milroy]

This PR adds functionality to update an allocated job's expiration. To do so, we add modify functionality within the traverser to update a jobid rather than remove it. The PR adds functionality to update planner scheduled points to extend the last and last_p->at times. When merged, this PR will resolve issue #1079.

This PR is WIP as it isn't clear whether the simple modification of an allocation's expiration will work when there are queue policies that create reservations.

[codecov[bot]]

Codecov Report

Merging #1158 (f15a5f0) into master (68c636a) will decrease coverage by 1.0%. The diff coverage is 31.7%.

Additional details and impacted files

@@           Coverage Diff            @@
##           master   #1158     +/-   ##
========================================
- Coverage    71.0%   70.1%   -1.0%     
========================================
  Files          96      96             
  Lines       12867   13079    +212     
========================================
+ Hits         9147    9175     +28     
- Misses       3720    3904    +184     

Files	Coverage Δ
resource/traversers/dfu_impl.hpp	94.7% <ø> (ø)
resource/planner/c++/planner.cpp	81.9% <0.0%> (-1.6%)	:arrow_down:
resource/traversers/dfu.cpp	83.4% <0.0%> (-4.2%)	:arrow_down:
qmanager/modules/qmanager.cpp	70.6% <70.4%> (-2.9%)	:arrow_down:
resource/planner/c/planner_multi_c_interface.cpp	55.3% <0.0%> (-2.8%)	:arrow_down:
resource/planner/c/planner_c_interface.cpp	66.8% <0.0%> (-3.3%)	:arrow_down:
resource/utilities/command.cpp	71.6% <0.0%> (-3.8%)	:arrow_down:
resource/modules/resource_match.cpp	66.8% <17.3%> (-1.8%)	:arrow_down:
resource/traversers/dfu_impl_update.cpp	70.0% <43.9%> (-7.7%)	:arrow_down: