feat: add contributors.jenkins.io synthetics monitoring

[lemeurherve]

This PR adds monitoring for contributors.jenkins.io

Ref:

• Start a new repo under jenkins-infra for the Jenkins Contributor Spotlight feature on jenkins.io helpdesk#3809 (comment)

[lemeurherve]

Terraform will perform the following actions:

  # datadog_synthetics_test.contributors_jenkins_io will be created
  + resource "datadog_synthetics_test" "contributors_jenkins_io" {
      + id         = (known after apply)
      + locations  = [
          + "aws:eu-central-1",
        ]
      + message    = "Notify @pagerduty"
      + monitor_id = (known after apply)
      + name       = "contributors.jenkins.io"
      + status     = "live"
      + tags       = [
          + "jenkins.io",
          + "production",
        ]
      + type       = "api"

      + assertion {
          + operator = "is"
          + target   = "200"
          + type     = "statusCode"
        }

      + options_list {
          + min_location_failed = 1
          + tick_every          = 900

          + retry {
              + count    = 2
              + interval = 300
            }
        }

      + request_definition {
          + method  = "GET"
          + timeout = 60
          + url     = "https://contributors.jenkins.io"
        }
    }

Plan: 1 to add, 0 to change, 0 to destroy.

[smerle33]

🚀
Plan: 1 to add, 0 to change, 0 to destroy.