Add unit test for the notify trigger

[dgageot]

Signed-off-by: David Gageot david@gageot.net

[codecov]

Codecov Report

Merging #2227 into master will decrease coverage by 2.47%.
The diff coverage is 0%.

@@            Coverage Diff             @@
##           master    #2227      +/-   ##
==========================================
- Coverage   61.33%   58.86%   -2.48%     
==========================================
  Files         187      188       +1     
  Lines        7995     7849     -146     
==========================================
- Hits         4904     4620     -284     
- Misses       2701     2860     +159     
+ Partials      390      369      -21

Impacted Files	Coverage Δ
pkg/skaffold/watch/triggers.go	63.04% <0%> (+17.39%)	⬆️
pkg/skaffold/build/cluster/types.go	0% <0%> (-55.18%)	⬇️
pkg/skaffold/kubernetes/wait.go	0% <0%> (-46.06%)	⬇️
pkg/skaffold/kubernetes/context/context.go	66.66% <0%> (-33.34%)	⬇️
pkg/skaffold/docker/image_util.go	0% <0%> (-33.34%)	⬇️
pkg/skaffold/build/local/types.go	53.12% <0%> (-14.53%)	⬇️
pkg/skaffold/runner/diagnose.go	0% <0%> (-13.05%)	⬇️
pkg/skaffold/sync/sync.go	70.32% <0%> (-11.73%)	⬇️
cmd/skaffold/man/man.go	77.27% <0%> (-10.97%)	⬇️
pkg/skaffold/docker/remote.go	53.12% <0%> (-9.38%)	⬇️
... and 38 more

---

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 ee24699...8a5ad98. Read the comment docs.