Helm dependency update --verify should fail when verification fails.

Closes #2717

(cherry picked from commit d84b707d)

Adds additional manifest sorting logic so that different unknown kinds
are sorted alphabetically so that manifest order is more deterministic.

(cherry picked from commit ed24b319)

The alias functionality only works when a hardcoded version
is used. Any use of semver logic causes unexpected behavior.
I use version.IsCompatibleRange to check the dependency version.

Closes #2794

(cherry picked from commit 0440b54b)

(cherry picked from commit ff5acc9b)

When release upgrade fails, updatedRelease is already created
in a storage by *ReleaseServer.UpdateRelease, therefore we should
be updating it's status, not creating it again.

(cherry picked from commit 38c3f58d)

(cherry picked from commit f278675f)

This reverts commit edd4e561.

(cherry picked from commit 211f5f6f)

This reverts commit 965cb7fd.

(cherry picked from commit 9d1db285)

Use the current kube config namespace by default if --namespace is not specified.
This makes 'helm upgrade --install' and 'helm install' handle namespaces
the same way.

Delete old deps after chart deps are updated

feat(tiller): sort manifests alphabetically if they are same kind

Remove length check from subsort test. Add check for unknowns.

Updates Tiller manifest sorting so that manifests of the same kind are
then sorted alphabetically.

Closes #1696

Fix the default NOTES.txt and values.yaml

Fix Typo in Contributing Guidelines

Add nebril to OWNERS

This change changes the order of operations in
pkg/downloader.Manager.downloadAll

Old charts are moved to tmp directory which is restored in case any
dependency update fails. Otherwise tmp dir is deleted.

updated pullpolicy example

Unsupported value: "alwaysPull": supported values: Always, IfNotPresent, Never

chore(docs): add guide for service accounts

feat(helm):use a variable for labels to get tiller pod

Redefine the err variable in NewChartRepository, otherwise errors migh slip through

fix(pkg/strvals): preserve leading zeros in vals

Add link to wheel.

Updating default values.yaml comments

Add godoc reference badge

Add requirements.yaml to Charts file structure