Return 409 conflict on origin create when existing

[reset]

• Add ENTITY_CONFLICT net error
• Switch from returning an ACCESS_DENIED net error to ENTITY_CONFLICT when origin create fails due to a pre-existing origin of the same name
• Return a 409 status code when creating an origin and it already exists from a 500

Signed-off-by: Jamie Winsor [email protected]

[smith]

Makes it work perfectly!

DEBUG:hyper::net: http scheme
↑ Uploading public key /Users/nathansmith/.hab/cache/keys/smith-20160612192909.pub
DEBUG:hyper::net: http scheme
DEBUG:hyper::http::h1: request line: Post "/v1/depot/origins/smith/keys/20160612192909" Http11
DEBUG:hyper::http::h1: headers=Headers { Authorization: Bearer 11a997b3a9b94b435fd268ceb6f878d50c1457dd, Host: localhost:9636, Content-Length: 76, }
    76 B / 76 B | [====================================================================================================] 100.00 % 24.37 KB/s  DEBUG:hyper::client::response: version=Http11, status=Conflict
DEBUG:hyper::client::response: headers=Headers { Date: Tue, 14 Jun 2016 18:44:49 GMT, Access-Control-Allow-Origin: *, Content-Length: 0, Access-Control-Expose-Headers: content-range, next-range, Access-Control-Allow-Headers: authorization, range, }
DEBUG:hab::command::origin::key::upload_latest: Error uploading public key 409 Conflict
✓ Public key revision already exists in the depot smith-20160612192909
★ Upload of public origin key smith-20160612192909 complete.

@thesentinels r+

[thesentinels]

📌 Commit fc694b0 has been approved by smith

[thesentinels]

⌛ Testing commit fc694b0 with merge 1553862...

[thesentinels]

☀️ Test successful - travis