[582204] Update jobs from Tycho 2.7.5 to Tycho 4.0.0 Also update certain bundles from J2SE-1.5 to something newer due to problems working with 1.5 on our build infra, and add the Code of Conduct. Change-Id: Ia37654b6b4be185ae5c80ccdaf9978bff483e6fb Change-Id: I7fbd299efb446bffb48fbd6de2e755ab3afd8f60