script: Make LXC container size suitable for gitian builds
script: Make LXC container size suitable for gitian builds

This change prevents "No space left on device" error.

tecnovert/particl-core,JeremyRubin/bitcoin,sstone/bitcoin,mm-s/bitcoin,GroestlCoin/GroestlCoin,ajtowns/bitcoin,AkioNak/bitcoin,apoelstra/bitcoin,jamesob/bitcoin,namecoin/namecore,rnicoll/bitcoin,sstone/bitcoin,andreaskern/bitcoin,jamesob/bitcoin,anditto/bitcoin,pataquets/namecoin-core,apoelstra/bitcoin,ajtowns/bitcoin,domob1812/bitcoin,qtumproject/qtum,GroestlCoin/GroestlCoin,AkioNak/bitcoin,n1bor/bitcoin,bitcoin/bitcoin,bitcoin/bitcoin,jamesob/bitcoin,sipsorcery/bitcoin,jlopp/statoshi,jamesob/bitcoin,domob1812/namecore,particl/particl-core,jamesob/bitcoin,tecnovert/particl-core,fanquake/bitcoin,achow101/bitcoin,bitcoinsSG/bitcoin,anditto/bitcoin,instagibbs/bitcoin,GroestlCoin/bitcoin,GroestlCoin/bitcoin,GroestlCoin/GroestlCoin,Xekyo/bitcoin,dscotese/bitcoin,particl/particl-core,anditto/bitcoin,n1bor/bitcoin,namecoin/namecore,dscotese/bitcoin,bitcoin/bitcoin,jamesob/bitcoin,sstone/bitcoin,MarcoFalke/bitcoin,prusnak/bitcoin,particl/particl-core,mruddy/bitcoin,bitcoin/bitcoin,domob1812/bitcoin,bitcoinsSG/bitcoin,ElementsProject/elements,namecoin/namecoin-core,lateminer/bitcoin,qtumproject/qtum,sipsorcery/bitcoin,bitcoinknots/bitcoin,mruddy/bitcoin,pataquets/namecoin-core,tecnovert/particl-core,domob1812/namecore,instagibbs/bitcoin,AkioNak/bitcoin,JeremyRubin/bitcoin,namecoin/namecoin-core,prusnak/bitcoin,rnicoll/bitcoin,mruddy/bitcoin,domob1812/namecore,Sjors/bitcoin,jlopp/statoshi,sstone/bitcoin,fujicoin/fujicoin,fanquake/bitcoin,AkioNak/bitcoin,GroestlCoin/bitcoin,jlopp/statoshi,namecoin/namecore,fujicoin/fujicoin,domob1812/namecore,lateminer/bitcoin,MarcoFalke/bitcoin,n1bor/bitcoin,instagibbs/bitcoin,tecnovert/particl-core,ElementsProject/elements,MarcoFalke/bitcoin,namecoin/namecore,achow101/bitcoin,pataquets/namecoin-core,achow101/bitcoin,bitcoinsSG/bitcoin,GroestlCoin/GroestlCoin,bitcoinknots/bitcoin,apoelstra/bitcoin,n1bor/bitcoin,Xekyo/bitcoin,Xekyo/bitcoin,particl/particl-core,namecoin/namecoin-core,dscotese/bitcoin,dscotese/bitcoin,mm-s/bitcoin,qtumproject/qtum,MeshCollider/bitcoin,kallewoof/bitcoin,pataquets/namecoin-core,domob1812/bitcoin,kallewoof/bitcoin,ElementsProject/elements,ajtowns/bitcoin,Sjors/bitcoin,fanquake/bitcoin,mruddy/bitcoin,bitcoinknots/bitcoin,prusnak/bitcoin,Sjors/bitcoin,apoelstra/bitcoin,namecoin/namecoin-core,jambolo/bitcoin,jambolo/bitcoin,JeremyRubin/bitcoin,domob1812/bitcoin,fanquake/bitcoin,fanquake/bitcoin,andreaskern/bitcoin,rnicoll/bitcoin,achow101/bitcoin,yenliangl/bitcoin,prusnak/bitcoin,anditto/bitcoin,bitcoinsSG/bitcoin,prusnak/bitcoin,Sjors/bitcoin,kallewoof/bitcoin,andreaskern/bitcoin,apoelstra/bitcoin,ElementsProject/elements,MarcoFalke/bitcoin,JeremyRubin/bitcoin,yenliangl/bitcoin,andreaskern/bitcoin,instagibbs/bitcoin,ajtowns/bitcoin,qtumproject/qtum,tecnovert/particl-core,bitcoinknots/bitcoin,bitcoin/bitcoin,AkioNak/bitcoin,sipsorcery/bitcoin,lateminer/bitcoin,andreaskern/bitcoin,fujicoin/fujicoin,yenliangl/bitcoin,lateminer/bitcoin,domob1812/bitcoin,achow101/bitcoin,yenliangl/bitcoin,sipsorcery/bitcoin,jlopp/statoshi,qtumproject/qtum,namecoin/namecore,qtumproject/qtum,instagibbs/bitcoin,n1bor/bitcoin,fujicoin/fujicoin,jambolo/bitcoin,GroestlCoin/bitcoin,fanquake/bitcoin,sipsorcery/bitcoin,qtumproject/qtum,jambolo/bitcoin,Sjors/bitcoin,instagibbs/bitcoin,MeshCollider/bitcoin,MarcoFalke/bitcoin,domob1812/namecore,Xekyo/bitcoin,rnicoll/bitcoin,dscotese/bitcoin,jlopp/statoshi,jlopp/statoshi,JeremyRubin/bitcoin,prusnak/bitcoin,JeremyRubin/bitcoin,pataquets/namecoin-core,bitcoinsSG/bitcoin,MeshCollider/bitcoin,domob1812/bitcoin,ajtowns/bitcoin,MeshCollider/bitcoin,particl/particl-core,bitcoinknots/bitcoin,n1bor/bitcoin,bitcoinsSG/bitcoin,yenliangl/bitcoin,apoelstra/bitcoin,MarcoFalke/bitcoin,MeshCollider/bitcoin,AkioNak/bitcoin,namecoin/namecoin-core,bitcoin/bitcoin,jambolo/bitcoin,mm-s/bitcoin,mm-s/bitcoin,andreaskern/bitcoin,lateminer/bitcoin,pataquets/namecoin-core,namecoin/namecore,GroestlCoin/GroestlCoin,ElementsProject/elements,GroestlCoin/GroestlCoin,sstone/bitcoin,Xekyo/bitcoin,mruddy/bitcoin,jambolo/bitcoin,kallewoof/bitcoin,lateminer/bitcoin,ElementsProject/elements,sstone/bitcoin,mruddy/bitcoin,yenliangl/bitcoin,particl/particl-core,fujicoin/fujicoin,MeshCollider/bitcoin,Xekyo/bitcoin,fujicoin/fujicoin,achow101/bitcoin,ajtowns/bitcoin,dscotese/bitcoin,domob1812/namecore,anditto/bitcoin,mm-s/bitcoin,kallewoof/bitcoin,GroestlCoin/bitcoin,mm-s/bitcoin,GroestlCoin/bitcoin,anditto/bitcoin,rnicoll/bitcoin,sipsorcery/bitcoin,namecoin/namecoin-core,tecnovert/particl-core,kallewoof/bitcoin,rnicoll/bitcoin