* Upgrading spring-boot to 3.1.x * Making main release 3.1.x * Adding PR pipeline * Adding integration-tests to the build step * Update credhub-server/README.adoc Co-authored-by: Gareth Clay <spikymonkey@users.noreply.github.com> * Updating set-pipelines and channel name * Removing unnecessary clean * Adding docker mirror config and privileged tasks --------- Co-authored-by: Gareth Clay <spikymonkey@users.noreply.github.com>