interpreter: add dbname param
interpreter: add dbname param

avoid this:
./interpreter -store hbase -dbpath localhost/test/test

the command below is more clear:
./interpreter -store hbase -dbpath localhost/tidb -dbname test

pingcap/tidb,zs634134578/tidb,ueizhou/tidb,anywhy/tidb,andelf/tidb,liyu4/tidb,mccxj/tidb,pingcap/tidb,c4pt0r/tidb,silentred/tidb,louishust/tidb,8cbx/tidb,JinheLin/tidb,kyle-wang/tidb,8cbx/tidb,ngaut/tidb,qhsong/tidb,simon-xia/tidb,JinheLin/tidb,silenceper/tidb,louishust/tidb,pingcap/tidb,zs634134578/tidb,silentred/tidb,kyle-wang/tidb,ngaut/tidb,coocood/tidb,Cofyc/tidb,yangwenmai/tidb,yangwenmai/tidb,astaxie/tidb,tiancaiamao/tidb,EvilMcJerkface/tidb,CodeRushing/tidb,ming-relax/tidb,c4pt0r/tidb,myrice/tidb,tiancaiamao/tidb,ueizhou/tidb,kyle-wang/tidb,Cofyc/tidb,ngaut/tidb,cosmtrek/tidb,XuHuaiyu/tidb,kyle-wang/tidb,XuHuaiyu/tidb,kyle-wang/tidb,c4pt0r/tidb,spongedu/tidb,c4pt0r/tidb,ming-relax/tidb,simon-xia/tidb,silenceper/tidb,ngaut/tidb,coocood/tidb,anywhy/tidb,spongedu/tidb,astaxie/tidb,wusphinx/tidb,liyu4/tidb,pingcap/tidb,CodeRushing/tidb,myrice/tidb,ngaut/tidb,wusphinx/tidb,EvilMcJerkface/tidb,kyle-wang/tidb,qiuyesuifeng/tidb,pingcap/tidb,andelf/tidb,mccxj/tidb,zimulala/tidb,gaocegege/tidb,zimulala/tidb,yuanwhy/tidb,c4pt0r/tidb,Nify/tidb,pingcap/tidb,gaocegege/tidb,qiuyesuifeng/tidb,cosmtrek/tidb,Nify/tidb,ngaut/tidb,qhsong/tidb,c4pt0r/tidb,yuanwhy/tidb