Rescheduler parent/children later when no candidates and add schedule log

[244372610]

Description

If no parent node is available, the node is inserted into the queue to be scheduled and rescheduled later

Related Issue

fix #498

Motivation and Context

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation Update (if none of the other choices apply)

Checklist:

• Code compiles correctly.
• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

[codecov-commenter]

Codecov Report

Merging #497 (227bd9d) into main (2b18530) will increase coverage by 0.00%.
The diff coverage is 50.00%.

@@           Coverage Diff           @@
##             main     #497   +/-   ##
=======================================
  Coverage   39.52%   39.53%           
=======================================
  Files          81       81           
  Lines        6284     6285    +1     
=======================================
+ Hits         2484     2485    +1     
  Misses       3441     3441           
  Partials      359      359           

Flag	Coverage Δ
e2etests	∅ <ø> (∅)
unittests	39.53% <50.00%> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
scheduler/config/config.go	0.00% <0.00%> (ø)
client/daemon/peer/peertask_base.go	32.39% <100.00%> (+0.15%)	⬆️
manager/searcher/search.go
manager/searcher/searcher.go	82.05% <0.00%> (ø)

[gaius-qi]

LGTM