murdock: implement test result caching
murdock: implement test result caching

mtausig/RIOT,cladmi/RIOT,authmillenon/RIOT,miri64/RIOT,basilfx/RIOT,ant9000/RIOT,smlng/RIOT,yogo1212/RIOT,basilfx/RIOT,x3ro/RIOT,aeneby/RIOT,lazytech-org/RIOT,smlng/RIOT,smlng/RIOT,cladmi/RIOT,ant9000/RIOT,kaspar030/RIOT,miri64/RIOT,rfuentess/RIOT,josephnoir/RIOT,x3ro/RIOT,mfrey/RIOT,RIOT-OS/RIOT,RIOT-OS/RIOT,jasonatran/RIOT,authmillenon/RIOT,kYc0o/RIOT,yogo1212/RIOT,cladmi/RIOT,x3ro/RIOT,toonst/RIOT,OlegHahm/RIOT,mfrey/RIOT,toonst/RIOT,josephnoir/RIOT,yogo1212/RIOT,aeneby/RIOT,lazytech-org/RIOT,smlng/RIOT,rfuentess/RIOT,RIOT-OS/RIOT,miri64/RIOT,authmillenon/RIOT,OlegHahm/RIOT,josephnoir/RIOT,yogo1212/RIOT,OTAkeys/RIOT,miri64/RIOT,yogo1212/RIOT,jasonatran/RIOT,lazytech-org/RIOT,lazytech-org/RIOT,OTAkeys/RIOT,OlegHahm/RIOT,OlegHahm/RIOT,yogo1212/RIOT,authmillenon/RIOT,lazytech-org/RIOT,jasonatran/RIOT,jasonatran/RIOT,mtausig/RIOT,OTAkeys/RIOT,kaspar030/RIOT,josephnoir/RIOT,kaspar030/RIOT,OTAkeys/RIOT,rfuentess/RIOT,ant9000/RIOT,basilfx/RIOT,kaspar030/RIOT,kYc0o/RIOT,toonst/RIOT,toonst/RIOT,mtausig/RIOT,josephnoir/RIOT,ant9000/RIOT,aeneby/RIOT,kYc0o/RIOT,cladmi/RIOT,kaspar030/RIOT,cladmi/RIOT,x3ro/RIOT,OTAkeys/RIOT,miri64/RIOT,mfrey/RIOT,basilfx/RIOT,authmillenon/RIOT,smlng/RIOT,RIOT-OS/RIOT,mtausig/RIOT,aeneby/RIOT,ant9000/RIOT,kYc0o/RIOT,aeneby/RIOT,authmillenon/RIOT,mfrey/RIOT,x3ro/RIOT,jasonatran/RIOT,rfuentess/RIOT,kYc0o/RIOT,mtausig/RIOT,rfuentess/RIOT,RIOT-OS/RIOT,toonst/RIOT,OlegHahm/RIOT,mfrey/RIOT,basilfx/RIOT