generate user + service box keys

[bookshelfdave]

This PR adds the following commands to generate keys:

hab origin key generate someorigin
    OR
export HAB_ORIGIN=someorigin
hab origin key generate

hab user key generate foo someorg
    OR
export HAB_ORG=someorg
hab user key generate foo

hab service key generate foo.bar someorg
    OR
export HAB_ORG=xyz
hab service key generate foo.bar

• Clap verifies SERVICE_GROUP to be in the format .+\\..+
  • ie. "a string with a . in the middle"
• NOTE: hab origin key generate looks to have been reverted to hab origin generate_key, so this PR fixes that.

[reset]

A double slash is for code comments and a triple slash is for documentation. Since this is a public function I'm assuming you wanted this to show up in the documentation so you would want to add one more slash. If you didn't want it to show up in the docs then this is how you do it!

[bookshelfdave]

good catch, fixed.

[chef-delivery]

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[reset]

@metadave super clean

[bookshelfdave]

TODO:

• - user + service keys get an organization, not an origin!
  • https://chefio.slack.com/archives/habitat/p1460582850006682
• hab user key generate dave neato
  • where USERID=dave ORGANIZATION=neato
• ORGANIZATION has a default value of ENV[‘HABITAT_ORG’]
• hab origin key generate core is ORIGIN, and has a default value of ENV[‘HABITAT_ORIGIN’]
• hab service key generate redis.default neato is SERVICEGROUP ORGANIZATION where ORGANIZATION is ENV[‘HABITAT_ORG’]
• hab service key generate redis.default
• hab user key generate dave
• Document: "habitat packages come from an origin and run in an organization

[chef-delivery]

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[bookshelfdave]

updated!

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[smith]

I thought I remembered seeing we were using the HAB prefix for environment variables: HAB_ORIGIN instead of HABITAT_ORIGIN. Is this still the case (or was it ever?)

[bookshelfdave]

I was trying to stay consistent starting from https://github.com/chef/bldr/blob/master/components/hab/src/main.rs#L41

we can change it to whatever, as long as we are consistent across the board.

[bookshelfdave]

env vars renamed to HAB_ORIGIN and HAB_ORG

[chef-delivery]

This PR has passed 'Verify' and is ready for review and approval!
Use: '@delivery approve' when code review is complete.

[bookshelfdave]

@delivery approve

[chef-delivery]

Change: 07c843fb-9336-462c-a336-a66616553363 approved by: @metadave