(PCP-577) Don't run tests that restart broker
(PCP-577) Don't run tests that restart broker

Don't restart the broker when running tests to restart pxp-agent. This
prevents restarting the agent host when that host also includes the
master role, so that we only restart agents that don't include the
broker.

[skip ci]

puppetlabs/pxp-agent,puppetlabs/pxp-agent,puppetlabs/pxp-agent