agent: added tests for tag marshalling functions
agent: added tests for tag marshalling functions

dalehamel/serf,patrickviet/serf,mbrukman/serf,jmptrader/serf,pmenglund/serf,samaitra/serf,gnawhleinad/serf,hashicorp/serf,mbrukman/serf,mbrukman/serf,gnawhleinad/serf,samaitra/serf,FollowMyDev/serf,yonglehou/serf,mapuri/serf,yonglehou/serf,yonglehou/serf,minhkiller/serf,curtiszimmerman/serf,mbrukman/serf,curtiszimmerman/serf,samaitra/serf,gnawhleinad/serf,FollowMyDev/serf,mapuri/serf,dalehamel/serf,patrickviet/serf,patrickviet/serf,hashicorp/serf,dalehamel/serf,hashicorp/serf,dalehamel/serf,patrickviet/serf,mbrukman/serf,jmptrader/serf,dalehamel/serf,minhkiller/serf,pmenglund/serf,pmenglund/serf,patrickviet/serf,mbrukman/serf,FollowMyDev/serf,hashicorp/serf,samaitra/serf,jmptrader/serf,patrickviet/serf,samaitra/serf,jmptrader/serf,gnawhleinad/serf,minhkiller/serf,curtiszimmerman/serf,mapuri/serf,dalehamel/serf,pmenglund/serf,curtiszimmerman/serf,pmenglund/serf,FollowMyDev/serf,minhkiller/serf,curtiszimmerman/serf,jmptrader/serf,jmptrader/serf,mapuri/serf,gnawhleinad/serf,samaitra/serf,yonglehou/serf,gnawhleinad/serf,curtiszimmerman/serf,pmenglund/serf,mapuri/serf,hashicorp/serf,minhkiller/serf,yonglehou/serf,minhkiller/serf,yonglehou/serf,FollowMyDev/serf,FollowMyDev/serf,mapuri/serf