Cover hook-succeeded, hook-failed and before-hook-creation hook delete policies.

Existing helm.sh/hook-delete-policy annotation variables (hook-failed, hook-succeeded) do not allow to leave failed jobs for debugging without blocking the next job launching: every failed job must be deleted manually before the next related release is launching (installing, updating or rolling back).

New policy, before-hook-creation, removes the hook from previous release if there is one before the new hook is launched and can be used with another variable.

Adding --set-string flag to force string values.

Authentication support for remote charts repositories.

fix(helm): fix helm history unit tests

Fixed typo

Fix link to github issues in CONTRIBUTING.md

fixes #3652

add support for output format in json or yaml

Fix helm search command error on index search failures

Refactor tests on helm dependency list command to remove duplication

Refactor tests of repo-add command to remove duplication

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

fix windows path issues on `helm template -x`

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

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.

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

fix(helm): search command returns error on index search failures (specifically on regular expression errors)

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

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