Activedocs CRUD operations

[miguelsorianod]

Fixes #125

[miguelsorianod]

Added ActiveDocs Entity

[miguelsorianod]

I've updated the PR to add:

• Implementation of create, delete and list
• Unit tests
• Integration tests

[miguelsorianod]

The create command usage is:

USAGE
    3scale activedocs activedocs create <remote> <activedocs-name> <spec>

For the moment I've not implemented the 'apply' command because I've not found a suitable format for the command:

• If we make a positional parameter it will mean is mandatory. However, when performing the update part of the apply that is optional, so it shouldn't be mandatory
• if we make an optional parameter, it will mean is optional. However, when performing the create part of the apply that is mandatory, so it shouldn't be mandatory

[eguzki]

I think apply can be useful. For instance to publish or hide it. And OAS content should be optional. When executing apply command and the toolbox has to create because it does not exist, then optional parameter should exist otherwise, command should fail.

[miguelsorianod]

Implemented apply and added integration tests.

I think this should be finished. @eguzki could you review it?

Thank you.

[eguzki]

it is not a flag, but optional parameter

[eguzki]

It could be useful --service to list only activedocs for a certain service. But let's users demand first

[eguzki]

let(:remote) { client_url } should work

[miguelsorianod]

👍

[miguelsorianod]

Applied requested changes