Functions for API key rotation now support fully-qualified IDs

[john-odonnell]

Desired Outcome

Allow fully-qualified IDs to be passed to client.RotateUserAPIKey() and client.RotateHostAPIKey().

Implemented Changes

API Key rotation functions use new client.parseIDandEnforceKind(resourceID, kind string) function to accept and parse both fully- and partially-qualified role IDs while enforcing a kind requirement.

Connected Issue/Story

Resolves #[relevant GitHub issue(s), e.g. 76]

CyberArk internal issue ID: [insert issue ID]

Definition of Done

At least 1 todo must be completed in the sections below for the PR to be
merged.

Changelog

• The CHANGELOG has been updated, or
• This PR does not include user-facing changes and doesn't require a
  CHANGELOG update

Test coverage

• This PR includes new unit and integration tests to go with the code
  changes, or
• The changes in this PR do not require tests

Documentation

• Docs (e.g. READMEs) were updated in this PR
• A follow-up issue to update official docs has been filed here: [insert issue ID]
• This PR does not require updating any documentation

Behavior

• This PR changes product behavior and has been reviewed by a PO, or
• These changes are part of a larger initiative that will be reviewed later, or
• No behavior was changed with this PR

Security

• Security architect has reviewed the changes in this PR,
• These changes are part of a larger initiative with a separate security review, or
• There are no security aspects to these changes

[codeclimate]

Code Climate has analyzed commit ac30724 and detected 0 issues on this pull request.

The test coverage on the diff in this pull request is 100.0% (50% is the threshold).

This pull request will bring the total coverage in the repository to 82.9% (0.3% change).

View more on Code Climate.

[rpothier]

LGTM!