Jenkins: add git-cache init before build
Jenkins: add git-cache init before build

kaleb-himes/RIOT,jasonatran/RIOT,Ell-i/RIOT,basilfx/RIOT,toonst/RIOT,OlegHahm/RIOT,avmelnikoff/RIOT,Hyungsin/RIOT-OS,LudwigOrtmann/RIOT,hamilton-mote/RIOT-OS,beurdouche/RIOT,roberthartung/RIOT,LudwigKnuepfer/RIOT,RIOT-OS/RIOT,cladmi/RIOT,avmelnikoff/RIOT,adjih/RIOT,thomaseichinger/RIOT,lazytech-org/RIOT,plushvoxel/RIOT,kYc0o/RIOT,rfuentess/RIOT,RIOT-OS/RIOT,TobiasFredersdorf/RIOT,ant9000/RIOT,basilfx/RIOT,kaspar030/RIOT,neumodisch/RIOT,kaspar030/RIOT,LudwigOrtmann/RIOT,neumodisch/RIOT,OTAkeys/RIOT,LudwigKnuepfer/RIOT,cladmi/RIOT,toonst/RIOT,smlng/RIOT,beurdouche/RIOT,kbumsik/RIOT,dailab/RIOT,Ell-i/RIOT,BytesGalore/RIOT,Josar/RIOT,mfrey/RIOT,rfuentess/RIOT,OTAkeys/RIOT,toonst/RIOT,LudwigOrtmann/RIOT,miri64/RIOT,aeneby/RIOT,TobiasFredersdorf/RIOT,neumodisch/RIOT,biboc/RIOT,Josar/RIOT,kaspar030/RIOT,immesys/RiSyn,adrianghc/RIOT,dkm/RIOT,plushvoxel/RIOT,LudwigKnuepfer/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,mfrey/RIOT,OlegHahm/RIOT,dkm/RIOT,gebart/RIOT,smlng/RIOT,syin2/RIOT,adjih/RIOT,adjih/RIOT,kerneltask/RIOT,mtausig/RIOT,roberthartung/RIOT,gautric/RIOT,x3ro/RIOT,adjih/RIOT,gautric/RIOT,Ell-i/RIOT,neiljay/RIOT,jbeyerstedt/RIOT-OTA-update,kbumsik/RIOT,smlng/RIOT,BytesGalore/RIOT,miri64/RIOT,OTAkeys/RIOT,ant9000/RIOT,RIOT-OS/RIOT,x3ro/RIOT,ant9000/RIOT,smlng/RIOT,jfischer-phytec-iot/RIOT,OlegHahm/RIOT,gebart/RIOT,biboc/RIOT,Hyungsin/RIOT-OS,LudwigKnuepfer/RIOT,x3ro/RIOT,toonst/RIOT,A-Paul/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,yogo1212/RIOT,jfischer-phytec-iot/RIOT,toonst/RIOT,adrianghc/RIOT,basilfx/RIOT,lazytech-org/RIOT,hamilton-mote/RIOT-OS,foss-for-synopsys-dwc-arc-processors/RIOT,kYc0o/RIOT,kYc0o/RIOT,Hyungsin/RIOT-OS,adrianghc/RIOT,authmillenon/RIOT,immesys/RiSyn,thomaseichinger/RIOT,ks156/RIOT,gebart/RIOT,dailab/RIOT,hamilton-mote/RIOT-OS,yogo1212/RIOT,OTAkeys/RIOT,lazytech-org/RIOT,gebart/RIOT,kbumsik/RIOT,biboc/RIOT,ks156/RIOT,adrianghc/RIOT,biboc/RIOT,authmillenon/RIOT,gebart/RIOT,dailab/RIOT,miri64/RIOT,neiljay/RIOT,immesys/RiSyn,Ell-i/RIOT,TobiasFredersdorf/RIOT,biboc/RIOT,kaspar030/RIOT,kbumsik/RIOT,hamilton-mote/RIOT-OS,mfrey/RIOT,beurdouche/RIOT,jbeyerstedt/RIOT-OTA-update,roberthartung/RIOT,kYc0o/RIOT,dailab/RIOT,A-Paul/RIOT,A-Paul/RIOT,beurdouche/RIOT,josephnoir/RIOT,kerneltask/RIOT,yogo1212/RIOT,cladmi/RIOT,A-Paul/RIOT,ant9000/RIOT,mtausig/RIOT,rfuentess/RIOT,x3ro/RIOT,beurdouche/RIOT,miri64/RIOT,dkm/RIOT,Josar/RIOT,roberthartung/RIOT,neiljay/RIOT,jbeyerstedt/RIOT-OTA-update,josephnoir/RIOT,dailab/RIOT,kaleb-himes/RIOT,avmelnikoff/RIOT,Josar/RIOT,x3ro/RIOT,kaleb-himes/RIOT,aeneby/RIOT,miri64/RIOT,kaspar030/RIOT,neumodisch/RIOT,kYc0o/RIOT,authmillenon/RIOT,LudwigKnuepfer/RIOT,jasonatran/RIOT,mtausig/RIOT,jasonatran/RIOT,syin2/RIOT,TobiasFredersdorf/RIOT,mtausig/RIOT,jasonatran/RIOT,thomaseichinger/RIOT,cladmi/RIOT,neumodisch/RIOT,kerneltask/RIOT,TobiasFredersdorf/RIOT,neiljay/RIOT,gautric/RIOT,immesys/RiSyn,foss-for-synopsys-dwc-arc-processors/RIOT,RIOT-OS/RIOT,immesys/RiSyn,adrianghc/RIOT,lazytech-org/RIOT,josephnoir/RIOT,aeneby/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,Hyungsin/RIOT-OS,jbeyerstedt/RIOT-OTA-update,kaleb-himes/RIOT,josephnoir/RIOT,josephnoir/RIOT,aeneby/RIOT,jbeyerstedt/RIOT-OTA-update,syin2/RIOT,basilfx/RIOT,LudwigOrtmann/RIOT,smlng/RIOT,kaleb-himes/RIOT,gautric/RIOT,ks156/RIOT,avmelnikoff/RIOT,syin2/RIOT,hamilton-mote/RIOT-OS,BytesGalore/RIOT,thomaseichinger/RIOT,immesys/RiSyn,A-Paul/RIOT,plushvoxel/RIOT,BytesGalore/RIOT,kbumsik/RIOT,OTAkeys/RIOT,kerneltask/RIOT,lazytech-org/RIOT,kerneltask/RIOT,authmillenon/RIOT,LudwigOrtmann/RIOT,dkm/RIOT,OlegHahm/RIOT,ks156/RIOT,mfrey/RIOT,basilfx/RIOT,jfischer-phytec-iot/RIOT,dkm/RIOT,ks156/RIOT,adjih/RIOT,avmelnikoff/RIOT,cladmi/RIOT,yogo1212/RIOT,yogo1212/RIOT,rfuentess/RIOT,jfischer-phytec-iot/RIOT,neumodisch/RIOT,thomaseichinger/RIOT,Ell-i/RIOT,mtausig/RIOT,jfischer-phytec-iot/RIOT,RIOT-OS/RIOT,OlegHahm/RIOT,yogo1212/RIOT,ant9000/RIOT,Josar/RIOT,plushvoxel/RIOT,rfuentess/RIOT,neiljay/RIOT,BytesGalore/RIOT,roberthartung/RIOT,LudwigOrtmann/RIOT,authmillenon/RIOT,gautric/RIOT,mfrey/RIOT,Hyungsin/RIOT-OS,plushvoxel/RIOT,aeneby/RIOT,jasonatran/RIOT,syin2/RIOT,authmillenon/RIOT