Add more details to mutation related errors

[mmirecki]

The mutations error messages are sometimes missing information about the mutation for which a failure occurred.
This patch add some more info to some of the error messages.

[codecov-io]

Codecov Report

Merging #1142 (0dfd241) into master (705a40c) will increase coverage by 0.13%.
The diff coverage is 7.69%.

@@            Coverage Diff             @@
##           master    #1142      +/-   ##
==========================================
+ Coverage   48.47%   48.61%   +0.13%     
==========================================
  Files          63       63              
  Lines        4363     4363              
==========================================
+ Hits         2115     2121       +6     
+ Misses       1986     1983       -3     
+ Partials      262      259       -3     

Flag	Coverage Δ
unittests	48.61% <7.69%> (+0.13%)	⬆️

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

Impacted Files	Coverage Δ
pkg/mutation/assignmeta_mutator.go	47.94% <0.00%> (ø)
pkg/mutation/types/mutator.go	50.00% <0.00%> (ø)
pkg/mutation/assign_mutator.go	37.25% <5.88%> (ø)
pkg/mutation/system.go	81.39% <25.00%> (ø)
pkg/readiness/objset.go	75.00% <0.00%> (-12.50%)	⬇️
pkg/readiness/object_tracker.go	78.68% <0.00%> (-1.10%)	⬇️
...onstrainttemplate/constrainttemplate_controller.go	55.66% <0.00%> (+2.91%)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 705a40c...0dfd241. Read the comment docs.

[maxsmythe]

Thanks for this!

LGTM

[sozercan]

LGTM

looks like DCO needs to be signed

[mmirecki]

LGTM

looks like DCO needs to be signed

fixed