tests: periph_gpio: fix usage of shell_commands
tests: periph_gpio: fix usage of shell_commands

LudwigOrtmann/RIOT,rajma996/RIOT,kYc0o/RIOT,jbeyerstedt/RIOT-OTA-update,Yonezawa-T2/RIOT,Josar/RIOT,thiagohd/RIOT,gbarnett/RIOT,hamilton-mote/RIOT-OS,LudwigKnuepfer/RIOT,dhruvvyas90/RIOT,altairpearl/RIOT,LudwigOrtmann/RIOT,zhuoshuguo/RIOT,ThanhVic/RIOT,rousselk/RIOT,dkm/RIOT,gbarnett/RIOT,FrancescoErmini/RIOT,thiagohd/RIOT,daniel-k/RIOT,ant9000/RIOT,syin2/RIOT,kerneltask/RIOT,l3nko/RIOT,lebrush/RIOT,A-Paul/RIOT,Osblouf/RIOT,BytesGalore/RIOT,gebart/RIOT,lebrush/RIOT,MohmadAyman/RIOT,attdona/RIOT,haoyangyu/RIOT,ThanhVic/RIOT,stevenj/RIOT,zhuoshuguo/RIOT,rfuentess/RIOT,haoyangyu/RIOT,d00616/RIOT,luciotorre/RIOT,authmillenon/RIOT,lebrush/RIOT,adjih/RIOT,brettswann/RIOT,d00616/RIOT,FrancescoErmini/RIOT,arvindpdmn/RIOT,MarkXYang/RIOT,basilfx/RIOT,MarkXYang/RIOT,authmillenon/RIOT,neiljay/RIOT,toonst/RIOT,stevenj/RIOT,basilfx/RIOT,daniel-k/RIOT,Osblouf/RIOT,kerneltask/RIOT,kb2ma/RIOT,jremmert-phytec-iot/RIOT,syin2/RIOT,shady33/RIOT,Yonezawa-T2/RIOT,RubikonAlpha/RIOT,watr-li/RIOT,rfuentess/RIOT,rfuentess/RIOT,khhhh/RIOT,latsku/RIOT,latsku/RIOT,khhhh/RIOT,latsku/RIOT,yogo1212/RIOT,asanka-code/RIOT,kaspar030/RIOT,OlegHahm/RIOT,kaleb-himes/RIOT,authmillenon/RIOT,ks156/RIOT,JensErdmann/RIOT,rakendrathapa/RIOT,yogo1212/RIOT,RIOT-OS/RIOT,biboc/RIOT,hamilton-mote/RIOT-OS,arvindpdmn/RIOT,dhruvvyas90/RIOT,roberthartung/RIOT,RBartz/RIOT,dailab/RIOT,Ell-i/RIOT,haoyangyu/RIOT,josephnoir/RIOT,dhruvvyas90/RIOT,adjih/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,EmuxEvans/RIOT,haoyangyu/RIOT,rajma996/RIOT,mziegert/RIOT,abp719/RIOT,A-Paul/RIOT,neumodisch/RIOT,aeneby/RIOT,abp719/RIOT,immesys/RiSyn,EmuxEvans/RIOT,JensErdmann/RIOT,kbumsik/RIOT,yogo1212/RIOT,khhhh/RIOT,Yonezawa-T2/RIOT,OTAkeys/RIOT,kaleb-himes/RIOT,aeneby/RIOT,mtausig/RIOT,Ell-i/RIOT,adjih/RIOT,stevenj/RIOT,rousselk/RIOT,katezilla/RIOT,dailab/RIOT,kerneltask/RIOT,katezilla/RIOT,dailab/RIOT,RIOT-OS/RIOT,MonsterCode8000/RIOT,basilfx/RIOT,x3ro/RIOT,neiljay/RIOT,malosek/RIOT,alignan/RIOT,smlng/RIOT,cladmi/RIOT,jremmert-phytec-iot/RIOT,binarylemon/RIOT,LudwigOrtmann/RIOT,rakendrathapa/RIOT,adrianghc/RIOT,robixnai/RIOT,abp719/RIOT,A-Paul/RIOT,adjih/RIOT,alex1818/RIOT,malosek/RIOT,khhhh/RIOT,l3nko/RIOT,alignan/RIOT,Lexandro92/RIOT-CoAP,MohmadAyman/RIOT,x3ro/RIOT,jasonatran/RIOT,tfar/RIOT,thomaseichinger/RIOT,d00616/RIOT,MonsterCode8000/RIOT,JensErdmann/RIOT,Hyungsin/RIOT-OS,jremmert-phytec-iot/RIOT,plushvoxel/RIOT,biboc/RIOT,openkosmosorg/RIOT,kYc0o/RIOT,patkan/RIOT,stevenj/RIOT,rousselk/RIOT,luciotorre/RIOT,biboc/RIOT,MonsterCode8000/RIOT,herrfz/RIOT,katezilla/RIOT,plushvoxel/RIOT,shady33/RIOT,brettswann/RIOT,rousselk/RIOT,TobiasFredersdorf/RIOT,abkam07/RIOT,RubikonAlpha/RIOT,OTAkeys/RIOT,altairpearl/RIOT,adrianghc/RIOT,roberthartung/RIOT,ThanhVic/RIOT,MohmadAyman/RIOT,syin2/RIOT,altairpearl/RIOT,mziegert/RIOT,alex1818/RIOT,BytesGalore/RIOT,kaspar030/RIOT,dkm/RIOT,binarylemon/RIOT,MonsterCode8000/RIOT,authmillenon/RIOT,josephnoir/RIOT,abp719/RIOT,dhruvvyas90/RIOT,arvindpdmn/RIOT,stevenj/RIOT,gebart/RIOT,malosek/RIOT,kaspar030/RIOT,alex1818/RIOT,MohmadAyman/RIOT,kaleb-himes/RIOT,kbumsik/RIOT,d00616/RIOT,kaspar030/RIOT,zhuoshuguo/RIOT,josephnoir/RIOT,backenklee/RIOT,binarylemon/RIOT,rajma996/RIOT,ThanhVic/RIOT,rajma996/RIOT,cladmi/RIOT,altairpearl/RIOT,lazytech-org/RIOT,l3nko/RIOT,tfar/RIOT,herrfz/RIOT,haoyangyu/RIOT,watr-li/RIOT,malosek/RIOT,patkan/RIOT,gebart/RIOT,JensErdmann/RIOT,asanka-code/RIOT,kb2ma/RIOT,LudwigKnuepfer/RIOT,alignan/RIOT,adjih/RIOT,JensErdmann/RIOT,TobiasFredersdorf/RIOT,abkam07/RIOT,robixnai/RIOT,asanka-code/RIOT,thomaseichinger/RIOT,jasonatran/RIOT,gbarnett/RIOT,rousselk/RIOT,neumodisch/RIOT,ks156/RIOT,ThanhVic/RIOT,LudwigKnuepfer/RIOT,RBartz/RIOT,syin2/RIOT,miri64/RIOT,patkan/RIOT,Ell-i/RIOT,mfrey/RIOT,watr-li/RIOT,gautric/RIOT,x3ro/RIOT,mtausig/RIOT,shady33/RIOT,basilfx/RIOT,adrianghc/RIOT,herrfz/RIOT,ant9000/RIOT,miri64/RIOT,gautric/RIOT,lebrush/RIOT,FrancescoErmini/RIOT,dkm/RIOT,wentaoshang/RIOT,avmelnikoff/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,rajma996/RIOT,watr-li/RIOT,gautric/RIOT,hamilton-mote/RIOT-OS,binarylemon/RIOT,msolters/RIOT,msolters/RIOT,jremmert-phytec-iot/RIOT,MohmadAyman/RIOT,Ell-i/RIOT,RBartz/RIOT,dkm/RIOT,Lexandro92/RIOT-CoAP,alex1818/RIOT,miri64/RIOT,Josar/RIOT,rousselk/RIOT,brettswann/RIOT,gbarnett/RIOT,altairpearl/RIOT,shady33/RIOT,abp719/RIOT,robixnai/RIOT,wentaoshang/RIOT,openkosmosorg/RIOT,patkan/RIOT,toonst/RIOT,thomaseichinger/RIOT,kaleb-himes/RIOT,arvindpdmn/RIOT,yogo1212/RIOT,Josar/RIOT,smlng/RIOT,neumodisch/RIOT,asanka-code/RIOT,alignan/RIOT,x3ro/RIOT,OlegHahm/RIOT,OlegHahm/RIOT,openkosmosorg/RIOT,MarkXYang/RIOT,jfischer-phytec-iot/RIOT,beurdouche/RIOT,beurdouche/RIOT,asanka-code/RIOT,Hyungsin/RIOT-OS,rakendrathapa/RIOT,RIOT-OS/RIOT,roberthartung/RIOT,rakendrathapa/RIOT,gbarnett/RIOT,asanka-code/RIOT,jfischer-phytec-iot/RIOT,EmuxEvans/RIOT,openkosmosorg/RIOT,kbumsik/RIOT,ant9000/RIOT,openkosmosorg/RIOT,katezilla/RIOT,rfuentess/RIOT,yogo1212/RIOT,mfrey/RIOT,tfar/RIOT,attdona/RIOT,Osblouf/RIOT,roberthartung/RIOT,RubikonAlpha/RIOT,A-Paul/RIOT,shady33/RIOT,neiljay/RIOT,mtausig/RIOT,RubikonAlpha/RIOT,basilfx/RIOT,OlegHahm/RIOT,RBartz/RIOT,watr-li/RIOT,beurdouche/RIOT,robixnai/RIOT,FrancescoErmini/RIOT,attdona/RIOT,BytesGalore/RIOT,jasonatran/RIOT,mfrey/RIOT,lazytech-org/RIOT,jfischer-phytec-iot/RIOT,zhuoshuguo/RIOT,brettswann/RIOT,mziegert/RIOT,stevenj/RIOT,lebrush/RIOT,luciotorre/RIOT,yogo1212/RIOT,ant9000/RIOT,cladmi/RIOT,kYc0o/RIOT,Lexandro92/RIOT-CoAP,zhuoshuguo/RIOT,JensErdmann/RIOT,adrianghc/RIOT,thiagohd/RIOT,Yonezawa-T2/RIOT,msolters/RIOT,alignan/RIOT,rfuentess/RIOT,Yonezawa-T2/RIOT,wentaoshang/RIOT,RubikonAlpha/RIOT,rakendrathapa/RIOT,luciotorre/RIOT,haoyangyu/RIOT,khhhh/RIOT,OlegHahm/RIOT,immesys/RiSyn,neiljay/RIOT,thiagohd/RIOT,gebart/RIOT,Yonezawa-T2/RIOT,toonst/RIOT,MonsterCode8000/RIOT,LudwigOrtmann/RIOT,mziegert/RIOT,kbumsik/RIOT,daniel-k/RIOT,daniel-k/RIOT,MohmadAyman/RIOT,MonsterCode8000/RIOT,plushvoxel/RIOT,RBartz/RIOT,dkm/RIOT,toonst/RIOT,toonst/RIOT,Osblouf/RIOT,avmelnikoff/RIOT,backenklee/RIOT,jremmert-phytec-iot/RIOT,BytesGalore/RIOT,immesys/RiSyn,ThanhVic/RIOT,daniel-k/RIOT,gautric/RIOT,thiagohd/RIOT,smlng/RIOT,attdona/RIOT,jfischer-phytec-iot/RIOT,biboc/RIOT,josephnoir/RIOT,A-Paul/RIOT,msolters/RIOT,thiagohd/RIOT,arvindpdmn/RIOT,abkam07/RIOT,tfar/RIOT,attdona/RIOT,aeneby/RIOT,TobiasFredersdorf/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,robixnai/RIOT,backenklee/RIOT,Osblouf/RIOT,arvindpdmn/RIOT,jfischer-phytec-iot/RIOT,OTAkeys/RIOT,kb2ma/RIOT,RBartz/RIOT,Hyungsin/RIOT-OS,foss-for-synopsys-dwc-arc-processors/RIOT,smlng/RIOT,lazytech-org/RIOT,alex1818/RIOT,luciotorre/RIOT,lazytech-org/RIOT,rajma996/RIOT,abkam07/RIOT,MarkXYang/RIOT,msolters/RIOT,LudwigOrtmann/RIOT,lazytech-org/RIOT,Josar/RIOT,openkosmosorg/RIOT,LudwigKnuepfer/RIOT,OTAkeys/RIOT,mfrey/RIOT,immesys/RiSyn,authmillenon/RIOT,luciotorre/RIOT,EmuxEvans/RIOT,MarkXYang/RIOT,Osblouf/RIOT,abkam07/RIOT,herrfz/RIOT,avmelnikoff/RIOT,mfrey/RIOT,immesys/RiSyn,gebart/RIOT,Lexandro92/RIOT-CoAP,l3nko/RIOT,plushvoxel/RIOT,avmelnikoff/RIOT,malosek/RIOT,FrancescoErmini/RIOT,cladmi/RIOT,latsku/RIOT,dhruvvyas90/RIOT,Josar/RIOT,mziegert/RIOT,hamilton-mote/RIOT-OS,l3nko/RIOT,beurdouche/RIOT,mtausig/RIOT,roberthartung/RIOT,lebrush/RIOT,kbumsik/RIOT,mziegert/RIOT,latsku/RIOT,FrancescoErmini/RIOT,jasonatran/RIOT,immesys/RiSyn,LudwigKnuepfer/RIOT,alex1818/RIOT,MarkXYang/RIOT,attdona/RIOT,Hyungsin/RIOT-OS,Hyungsin/RIOT-OS,watr-li/RIOT,syin2/RIOT,BytesGalore/RIOT,miri64/RIOT,zhuoshuguo/RIOT,d00616/RIOT,kaleb-himes/RIOT,abkam07/RIOT,tfar/RIOT,RIOT-OS/RIOT,Ell-i/RIOT,jbeyerstedt/RIOT-OTA-update,cladmi/RIOT,gautric/RIOT,aeneby/RIOT,hamilton-mote/RIOT-OS,wentaoshang/RIOT,x3ro/RIOT,daniel-k/RIOT,josephnoir/RIOT,ks156/RIOT,ks156/RIOT,brettswann/RIOT,LudwigOrtmann/RIOT,rakendrathapa/RIOT,ks156/RIOT,thomaseichinger/RIOT,jbeyerstedt/RIOT-OTA-update,backenklee/RIOT,malosek/RIOT,OTAkeys/RIOT,khhhh/RIOT,neumodisch/RIOT,EmuxEvans/RIOT,kerneltask/RIOT,jasonatran/RIOT,abp719/RIOT,dhruvvyas90/RIOT,herrfz/RIOT,aeneby/RIOT,kYc0o/RIOT,kb2ma/RIOT,msolters/RIOT,authmillenon/RIOT,jbeyerstedt/RIOT-OTA-update,latsku/RIOT,backenklee/RIOT,miri64/RIOT,kYc0o/RIOT,kaspar030/RIOT,wentaoshang/RIOT,herrfz/RIOT,avmelnikoff/RIOT,beurdouche/RIOT,jremmert-phytec-iot/RIOT,TobiasFredersdorf/RIOT,brettswann/RIOT,kerneltask/RIOT,biboc/RIOT,d00616/RIOT,neumodisch/RIOT,neiljay/RIOT,katezilla/RIOT,neumodisch/RIOT,binarylemon/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,binarylemon/RIOT,ant9000/RIOT,wentaoshang/RIOT,gbarnett/RIOT,Lexandro92/RIOT-CoAP,kb2ma/RIOT,dailab/RIOT,robixnai/RIOT,adrianghc/RIOT,plushvoxel/RIOT,Lexandro92/RIOT-CoAP,altairpearl/RIOT,mtausig/RIOT,shady33/RIOT,l3nko/RIOT,EmuxEvans/RIOT,TobiasFredersdorf/RIOT,jbeyerstedt/RIOT-OTA-update,RubikonAlpha/RIOT,thomaseichinger/RIOT,dailab/RIOT,RIOT-OS/RIOT,smlng/RIOT,patkan/RIOT,patkan/RIOT