fix windows path issues on `helm template -x`

The MUTABLE_IMAGE_RUDDER variables was using the DOCKER_VERSION instead of MUTABLE_VERSION
```
MUTABLE_IMAGE        := ${DOCKER_REGISTRY}/${IMAGE_PREFIX}/${SHORT_NAME}:${MUTABLE_VERSION}
MUTABLE_IMAGE_RUDDER := ${DOCKER_REGISTRY}/${IMAGE_PREFIX}/${SHORT_NAME_RUDDER}:${DOCKER_VERSION}
```

Fixed referencing the wrong env variable if SHA sum doesn't match.

add newline after header

feat(helm): inspect readme

bump version to v2.8.2

Fix the unit tests to avoid leaving behind 'helm_home*' temporary directories during build

refactor helm version command tests to remove duplication.

Doesn't cahnge the rendered markdown, but it makes the styling consistent with the rest of the docs.

Signed-off-by: Arash Deshmeh <adeshmeh@ca.ibm.com>

Recover from a tiller pod crash caused due to errors in values.yaml

Refactor helm status command tests to remove duplication

Cleaned up the owners file, adding the emeritus section and removing
an account that was not a core maintainer.

remove "This Repository" link from releases page

Fix duplicate test code in helm history command

fix(helm) refactor helm status command tests to use releaseCase struct and the corresponding function runReleaseCases. Fixes #3659
Signed-off-by: Arash Deshmeh <adeshmeh@ca.ibm.com>

Accept .yml files as well as .yaml for templates.

Signed-off-by: Arash Deshmeh <adeshmeh@ca.ibm.com>

fix typo in docs and fake

Respect http proxy settings when using custom Transport

Remove duplicate test code from cmd/helm/list_test.go

(cherry picked from commit a8023164)

replace FAILED deployments with `helm upgrade --install --force`

See https://github.com/helm/helm-classic/pull/306 for helm classic
and
https://kubernetes.slack.com/archives/C51E88VDG/p1520588964000061

Relative home path part1

Add helm-unittest plugins in related

When using `helm upgrade --install`, if the first release fails, Helm will respond with an error saying that it cannot upgrade from an unknown state.

With this feature, `helm upgrade --install --force` automates the same process as `helm delete && helm install --replace`. It will mark the previous release as DELETED, delete any existing resources inside Kubernetes, then replace it as if it was a fresh install. It will then mark the FAILED release as SUPERSEDED.

replace PingTiller APIs with the gPRC health check API

k8s.io/kubernetes bumped protobuf to 1643683e1b54a9e88ad26d98f81400c8c9d9f4f9

Signed-off-by: Arash Deshmeh <adeshmeh@ca.ibm.com>