Add support for quality gates by adding custom type (create, remove)

[frodoslaw]

Add support for quality gates by adding custom puppet type and provider: qualitygates.

Type description

This type should manage quality gates (create, remove).

sonarqube::qualitygates { 'COI way':
  ensure     => 'present',
  default    => true,
  conditions => {
    'blocker_violations'  = {'error' => 10, 'warning' => 5, 'op' => 'GT'},
    'critical_violations' = {'error' => 5, 'warning' => 0, 'op' => 'GT'},
# [...]
  }
}

Provider description

There should be a default provider that will use SonarQube API https://nemo.sonarqube.org/api_documentation/api/qualitygates

Below are listed required API functions that should fulfil type contract:

• POST api/qualitygates/create - Since 4.3
• POST api/qualitygates/create_condition
• POST api/qualitygates/delete_condition
• POST api/qualitygates/destroy
• GET api/qualitygates/search
• GET api/qualitygates/list
• POST api/qualitygates/select
• POST api/qualitygates/set_as_default
• POST api/qualitygates/unset_default
• POST api/qualitygates/update_condition

This provider will support SonarQube ver. >= 5.2