Exclude tmpcharts folder and helm generated .lock files from list of watched files

[gsquared94]

Exclude tmpcharts folder and helm generated .lock files from list of watched files

Fixes: #3565
Description

helm dep up makes changes to the tmpcharts in addition to charts subdirectory within a chart package. It also modifies requirements.lock file (helm 2) and Chart.lock file (helm 3). So we exclude these file from the file change monitor when skipBuildDependencies is not set to true

This is consistent with existing behavior of excluding charts subdirectory similarly.

[codecov]

Codecov Report

Merging #4181 into master will increase coverage by 0.90%.
The diff coverage is 100.00%.

Impacted Files	Coverage Δ
pkg/skaffold/deploy/helm.go	84.12% <100.00%> (+4.99%)	⬆️
pkg/skaffold/runner/logger.go	36.36% <0.00%> (-63.64%)	⬇️
cmd/skaffold/app/cmd/flags.go	89.47% <0.00%> (-10.53%)	⬇️
pkg/skaffold/kubernetes/log.go	34.14% <0.00%> (-4.80%)	⬇️
pkg/skaffold/runner/kind.go	100.00% <0.00%> (ø)
pkg/skaffold/runner/runner.go	0.00% <0.00%> (ø)
pkg/skaffold/errors/buildProblems.go	100.00% <0.00%> (ø)
pkg/skaffold/schema/v2beta3/upgrade.go	100.00% <0.00%> (ø)
pkg/skaffold/util/regex.go	100.00% <0.00%> (ø)
pkg/skaffold/debug/transform_go.go	84.48% <0.00%> (+0.16%)	⬆️
... and 19 more