Improve kitbag's help command

[m00g3n]

Description

ATM to see the output of the help command one needs to fulfill all the plugin's requirements e.g.

• have access to all the binaries used by the plugin,
• have all required environmental variables set.

Help message should be displayed be displayed without any restrictions.

$ kitbag mothership help

ERROR:
    * The variable 'MOTHERSHIP_KUBECONFIG' was not defined or is empty

Usage:
kitbag  <command> [-optionKey optionValue]*

Supported commands for '' are:
  * self            (sub-plugin)             
  * golang          (sub-plugin)             
  * mothership      (sub-plugin)             
  * k3s             (sub-plugin)             

Available options for 'mothership' are [Name|Alias|DefaultValue|Description]:
  * MOTHERSHIP_CORRELATION_ID|corelation_id|
  * MOTHERSHIP_RUNTIME_ID|runtime_id|
  * MOTHERSHIP_SCHEDULING_ID|scheduling_id|
  * MOTHERSHIP_SHOOT|shoot|
  * MOTHERSHIP_EXCLUDE|exclude|
  * MOTHERSHIP_KUBECONFIG|kubeconfig|
  * MOTHERSHIP_K8S_NAME|kcn|msrec
  * help

Reasons

• will help in kitbag's adoption
• improves kitbag's ergonomic

[kyma-bot]

This issue or PR has been automatically marked as stale due to the lack of recent activity. Thank you for your contributions.

This bot triages issues and PRs according to the following rules:

• After 60d of inactivity, lifecycle/stale is applied
• After 7d of inactivity since lifecycle/stale was applied, the issue is closed

You can:

• Mark this issue or PR as fresh with /remove-lifecycle stale
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If you think that I work incorrectly, kindly raise an issue with the problem.

/lifecycle stale

[kyma-bot]

This issue or PR has been automatically marked as stale due to the lack of recent activity. Thank you for your contributions.

This bot triages issues and PRs according to the following rules:

• After 60d of inactivity, lifecycle/stale is applied
• After 7d of inactivity since lifecycle/stale was applied, the issue is closed

You can:

• Mark this issue or PR as fresh with /remove-lifecycle stale
• Close this issue or PR with /close

If you think that I work incorrectly, kindly raise an issue with the problem.

/lifecycle stale

[kyma-bot]

This issue or PR has been automatically marked as stale due to the lack of recent activity. Thank you for your contributions.

This bot triages issues and PRs according to the following rules:

• After 60d of inactivity, lifecycle/stale is applied
• After 7d of inactivity since lifecycle/stale was applied, the issue is closed

You can:

• Mark this issue or PR as fresh with /remove-lifecycle stale
• Close this issue or PR with /close

If you think that I work incorrectly, kindly raise an issue with the problem.

/lifecycle stale

[tobiscr]

Kitbag is descoped from Kyma. Closing all issues.