fix #2531: convert literal true filters to nil
fix #2531: convert literal true filters to nil

n1tr0g/influxdb,pdf/influxdb,imcom/influxdb,pablolmiranda/influxdb,fg2it/influxdb,brunoqc/influxdb,timraymond/influxdb,influxdb/influxdb,roobert/influxdb,mash0304/influxdb,dneuman64/influxdb,jportoles/influxdb092,Ancillas/influxdb,fxstein/influxdb,chenziliang/influxdb,luciotorre/influxdb,tuxmonteiro/influxdb,Ancillas/influxdb,samaitra/influxdb,evanphx/influxdb,fg2it/influxdb,Ancillas/influxdb,rnubel/influxdb,samaitra/influxdb,Venu4thFeb/influxdb,sudabon/influxdb,trigrass2/influxdb,sudabon/influxdb,jgeiger/influxdb,Mindera/influxdb,IMCG/InfluxDB,luciotorre/influxdb,apigee/influxdb,daachi/influxdb,sudabon/influxdb,pkittenis/influxdb,vladlopes/influxdb,ezotrank/influxdb,mnuessler/influxdb,nooproblem/influxdb,apriendeau/influxdb,n1tr0g/influxdb,nickrobinson/influxdb,benbjohnson/influxdb,slachiewicz/influxdb,wxdublin/influxdb,nickrobinson/influxdb,benbjohnson/influxdb,Sotfo/influxdb,DanielMorsing/influxdb,paulstuart/influxdb,no2key/influxdb,lgpeterson/influxdb,nooproblem/influxdb,linearb/influxdb,tuxmonteiro/influxdb,jgeiger/influxdb,IMCG/InfluxDB,endophage/influxdb,imcom/influxdb,fg2it/influxdb,ninjasphere/influxdb,mnuessler/influxdb,bspline/influxdb,joaopedrotaveira/influxdb,lgpeterson/influxdb,no2key/influxdb,archsaber/influxdb,vladlopes/influxdb,tjyang/influxdb,stvnwrgs/influxdb,nickscript0/influxdb,trigrass2/influxdb,runner-mei/influxdb,evanphx/influxdb,pablolmiranda/influxdb,ninjasphere/influxdb,egymgmbh/influxdb,mark-rushakoff/influxdb,jonseymour/influxdb,rnubel/influxdb,kingland/influxdb,samaitra/influxdb,bspline/influxdb,m4ce/influxdb,n1tr0g/influxdb,paulstuart/influxdb,rnubel/influxdb,dneuman64/influxdb,nickrobinson/influxdb,tuxmonteiro/influxdb,GrimDerp/influxdb,bluebreezecf/influxdb,michaelsproul/influxdb,mre/influxdb,otoolep/influxdb,jgeiger/influxdb,jportoles/influxdb092,DanielMorsing/influxdb,pdf/influxdb,imcom/influxdb,fxstein/influxdb,jportoles/influxdb092,nickscript0/influxdb,pablolmiranda/influxdb,toorop/influxdb,runner-mei/influxdb,m4ce/influxdb,ASAPPinc/influxdb,mvadu/influxdb,mash0304/influxdb,CVTJNII/influxdb-tjnii,jportoles/influxdb092,mark-rushakoff/influxdb,imcom/influxdb,bluebreezecf/influxdb,otoolep/influxdb,egymgmbh/influxdb,stvnwrgs/influxdb,nickscript0/influxdb,toorop/influxdb,bspline/influxdb,jonseymour/influxdb,slachiewicz/influxdb,luciotorre/influxdb,mash0304/influxdb,Venu4thFeb/influxdb,GoIncremental/influxdb,pkittenis/influxdb,GoIncremental/influxdb,mre/influxdb,apigee/influxdb,Mindera/influxdb,CVTJNII/influxdb-tjnii,jipperinbham/influxdb,atyenoria/influxdb,mash0304/influxdb,Tony133/influxdb,stvnwrgs/influxdb,michaelsproul/influxdb,slachiewicz/influxdb,no2key/influxdb,tjyang/influxdb,mcanthony/influxdb,mvadu/influxdb,pkittenis/influxdb,chenziliang/influxdb,Tony133/influxdb,tommymei/influxdb,haim0n/influxdb,kingland/influxdb,mcanthony/influxdb,timraymond/influxdb,no2key/influxdb,brunoqc/influxdb,jonseymour/influxdb,jipperinbham/influxdb,lenko-d/influxdb,tjyang/influxdb,GoIncremental/influxdb,joaopedrotaveira/influxdb,egymgmbh/influxdb,atyenoria/influxdb,roobert/influxdb,nickrobinson/influxdb,Sotfo/influxdb,alexiri/influxdb,m4ce/influxdb,nooproblem/influxdb,Mindera/influxdb,mash0304/influxdb,m4ce/influxdb,tommymei/influxdb,paulstuart/influxdb,mre/influxdb,wxdublin/influxdb,opavader/influxdb,lgpeterson/influxdb,mark-rushakoff/influxdb,marcosnils/influxdb,pkittenis/influxdb,marcosnils/influxdb,Mindera/influxdb,influxdb/influxdb,Venu4thFeb/influxdb,GrimDerp/influxdb,opavader/influxdb,pablolmiranda/influxdb,marcosnils/influxdb,michaelsproul/influxdb,runcom/influxdb,kingland/influxdb,wxdublin/influxdb,DanielMorsing/influxdb,vladlopes/influxdb,wxdublin/influxdb,jportoles/influxdb092,sudabon/influxdb,Yong-Lee/influxdb,fxstein/influxdb,joaopedrotaveira/influxdb,otoolep/influxdb,benbjohnson/influxdb,mnuessler/influxdb,timraymond/influxdb,influxdb/influxdb,Tony133/influxdb,mmaul/influxdb,otoolep/influxdb,n1tr0g/influxdb,egymgmbh/influxdb,apriendeau/influxdb,Mindera/influxdb,linfangrong/influxdb,mmaul/influxdb,jgeiger/influxdb,cnelissen/influxdb,opavader/influxdb,n1tr0g/influxdb,fxstein/influxdb,slachiewicz/influxdb,brunoqc/influxdb,mvadu/influxdb,mnuessler/influxdb,slavau/influxdb,apriendeau/influxdb,Sotfo/influxdb,cnelissen/influxdb,slachiewicz/influxdb,lenko-d/influxdb,fg2it/influxdb,Sotfo/influxdb,Tony133/influxdb,marcosnils/influxdb,influxdb/influxdb,Yong-Lee/influxdb,nckturner/influxdb,timraymond/influxdb,linearb/influxdb,DanielMorsing/influxdb,runner-mei/influxdb,evanphx/influxdb,mnuessler/influxdb,tuxmonteiro/influxdb,endophage/influxdb,chenziliang/influxdb,brunoqc/influxdb,haim0n/influxdb,apigee/influxdb,jipperinbham/influxdb,runcom/influxdb,linfangrong/influxdb,timraymond/influxdb,michaelsproul/influxdb,ninjasphere/influxdb,dneuman64/influxdb,influxdb/influxdb,josephcopenhaver/influxdb,mcanthony/influxdb,jgeiger/influxdb,influxdata/influxdb,mre/influxdb,archsaber/influxdb,chenziliang/influxdb,mmaul/influxdb,nckturner/influxdb,mre/influxdb,bluebreezecf/influxdb,no2key/influxdb,hai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