I love Jenkins, and I love Mattermost. I do not love having to constantly import certificates into Java cacerts, and the default root certificates never seem to cover my sites (including those issued by Let's Encrypt)

Let's add an option in this plugin to bypass the SSL certificate checks so I can stop seeing logs full of 

Error posting to Mattermost
sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target

and instead see my build status in Mattermost.