test: Properly skip feature_syscall_sandbox in valgrind
test: Properly skip feature_syscall_sandbox in valgrind

Follow up to commit fa9c26ab3a09c843cb598d188162403bbf8c9b36

fujicoin/fujicoin,anditto/bitcoin,dscotese/bitcoin,jambolo/bitcoin,mruddy/bitcoin,bitcoinsSG/bitcoin,namecoin/namecore,AkioNak/bitcoin,bitcoinknots/bitcoin,bitcoinsSG/bitcoin,particl/particl-core,instagibbs/bitcoin,GroestlCoin/bitcoin,lateminer/bitcoin,fanquake/bitcoin,instagibbs/bitcoin,sipsorcery/bitcoin,jambolo/bitcoin,jlopp/statoshi,jlopp/statoshi,andreaskern/bitcoin,Xekyo/bitcoin,anditto/bitcoin,ajtowns/bitcoin,instagibbs/bitcoin,namecoin/namecore,jamesob/bitcoin,bitcoinknots/bitcoin,jambolo/bitcoin,fujicoin/fujicoin,Xekyo/bitcoin,jlopp/statoshi,tecnovert/particl-core,instagibbs/bitcoin,bitcoinknots/bitcoin,fanquake/bitcoin,jambolo/bitcoin,dscotese/bitcoin,particl/particl-core,bitcoinknots/bitcoin,GroestlCoin/bitcoin,achow101/bitcoin,fujicoin/fujicoin,GroestlCoin/bitcoin,bitcoin/bitcoin,jamesob/bitcoin,tecnovert/particl-core,sipsorcery/bitcoin,GroestlCoin/bitcoin,andreaskern/bitcoin,kallewoof/bitcoin,anditto/bitcoin,AkioNak/bitcoin,kallewoof/bitcoin,sipsorcery/bitcoin,namecoin/namecoin-core,instagibbs/bitcoin,andreaskern/bitcoin,GroestlCoin/bitcoin,ajtowns/bitcoin,particl/particl-core,namecoin/namecore,tecnovert/particl-core,Xekyo/bitcoin,andreaskern/bitcoin,mruddy/bitcoin,jlopp/statoshi,bitcoinsSG/bitcoin,achow101/bitcoin,jambolo/bitcoin,jamesob/bitcoin,fujicoin/fujicoin,pataquets/namecoin-core,achow101/bitcoin,jamesob/bitcoin,bitcoin/bitcoin,achow101/bitcoin,bitcoinsSG/bitcoin,mruddy/bitcoin,bitcoin/bitcoin,AkioNak/bitcoin,namecoin/namecore,AkioNak/bitcoin,mruddy/bitcoin,AkioNak/bitcoin,kallewoof/bitcoin,ajtowns/bitcoin,bitcoinsSG/bitcoin,Xekyo/bitcoin,sstone/bitcoin,GroestlCoin/bitcoin,tecnovert/particl-core,particl/particl-core,particl/particl-core,namecoin/namecoin-core,namecoin/namecore,fujicoin/fujicoin,domob1812/bitcoin,ajtowns/bitcoin,sstone/bitcoin,fanquake/bitcoin,namecoin/namecoin-core,ajtowns/bitcoin,domob1812/bitcoin,namecoin/namecore,domob1812/bitcoin,jlopp/statoshi,bitcoinknots/bitcoin,kallewoof/bitcoin,GroestlCoin/GroestlCoin,namecoin/namecoin-core,GroestlCoin/GroestlCoin,Xekyo/bitcoin,GroestlCoin/GroestlCoin,kallewoof/bitcoin,namecoin/namecoin-core,sstone/bitcoin,jlopp/statoshi,tecnovert/particl-core,andreaskern/bitcoin,kallewoof/bitcoin,instagibbs/bitcoin,bitcoin/bitcoin,dscotese/bitcoin,GroestlCoin/GroestlCoin,domob1812/bitcoin,pataquets/namecoin-core,fanquake/bitcoin,dscotese/bitcoin,ajtowns/bitcoin,bitcoinsSG/bitcoin,anditto/bitcoin,mruddy/bitcoin,lateminer/bitcoin,fujicoin/fujicoin,tecnovert/particl-core,lateminer/bitcoin,sstone/bitcoin,Xekyo/bitcoin,bitcoin/bitcoin,sstone/bitcoin,pataquets/namecoin-core,pataquets/namecoin-core,jambolo/bitcoin,anditto/bitcoin,andreaskern/bitcoin,sipsorcery/bitcoin,domob1812/bitcoin,fanquake/bitcoin,achow101/bitcoin,sstone/bitcoin,domob1812/bitcoin,anditto/bitcoin,pataquets/namecoin-core,GroestlCoin/GroestlCoin,sipsorcery/bitcoin,bitcoin/bitcoin,sipsorcery/bitcoin,jamesob/bitcoin,namecoin/namecoin-core,dscotese/bitcoin,particl/particl-core,pataquets/namecoin-core,lateminer/bitcoin,achow101/bitcoin,jamesob/bitcoin,fanquake/bitcoin,lateminer/bitcoin,mruddy/bitcoin,dscotese/bitcoin,lateminer/bitcoin,GroestlCoin/GroestlCoin,AkioNak/bitcoin