docs: mention NFS support for contiv volume plugin
docs: mention NFS support for contiv volume plugin

Signed-off-by: Cristian Staretu <78db8d24f2e00709fded2f6f25e9a572f4b7462f@gmail.com>

prertik/docker,tklauser/docker,duglin/docker,yummypeng/docker,qudongfang/docker,miminar/docker,moul/docker,tianon/docker,alfred-landrum/docker,dims/docker,xiaods/docker,miminar/docker,yosifkit/docker,madhanrm/docker,lixiaobing1/docker,darrenstahlmsft/moby,mike1729/docker,jimjag/docker,POLJM242/docker,thaJeztah/docker,jameszhan/docker,mstanleyjones/docker,Ramzec/docker,yummypeng/docker,nalind/docker,gnailuy/docker,portworx/docker,yongtang/docker,AkihiroSuda/docker,rremer/moby,estesp/docker,naveed-jamil-tenpearls/moby,docker/docker,madhanrm/docker,lixiaobing10051267/docker,qudongfang/docker,kunalkushwaha/docker,HideoYamauchi/docker,rremer/moby,whuwxl/docker,ndeloof/docker,laijs/docker,erikh/docker,nalind/docker,stevvooe/docker,moypray/docker,catinthesky/docker,resin-io/docker,flavio/docker,scotttlin/docker,flavio/docker,jlhawn/docker,pradipd/moby,jthelin/docker,cyphar/docker,kolyshkin/moby,erikstmartin/docker,msabansal/docker,moul/docker,afein/docker,portworx/docker,gnailuy/docker,kencochrane/docker,pramodhkp/moby,mikedougherty/docker,vdemeester/docker,rremer/moby,erikh/docker,srust/docker,bearstech/moby,srust/docker,PatrickLang/moby,lixiaobing1/docker,dperny/docker,coreos/docker,tmp6154/docker,dperny/docker,crosbymichael/docker,x1022as/docker,resin-io/docker,sterchelen/docker,ffoysal/docker,POLJM242/docker,harche/docker,gschaetz/moby,dccurtis/docker,tophj-ibm/docker,justincormack/docker,trebonian/docker,bearstech/moby,ffoysal/docker,q384566678/docker,mtesselH/docker,scotttlin/docker,akira-baruah/docker,sdurrheimer/docker,coreos/docker,liaoqingwei/docker,flavio/docker,miminar/docker,tophj-ibm/moby,ripcurld0/moby,djs55/docker,thaJeztah/docker,paralin/docker,dperny/docker,jameszhan/docker,crosbymichael/docker,haveatry/docker,xuxinkun/docker,tophj-ibm/docker,nalind/docker,justincormack/docker,gschaetz/moby,estesp/docker,yosifkit/docker,sterchelen/docker,mikebrow/docker,rancher/docker,dgageot/docker,michael-holzheu/docker,dmcgowan/docker,shhsu/docker,tophj-ibm/moby,rhatdan/docker,diogomonica/docker,amatsus/docker,qudongfang/docker,mahak/docker,mtrmac/docker,mtrmac/docker,ColinHebert/docker,mahak/docker,moby/moby,dccurtis/docker,jameszhan/docker,sarnautov/moby,danyalKhaliq10p/moby,johnstep/moby-moby,Syntaxide/docker,catinthesky/docker,sdurrheimer/docker,madhanrm/docker,mahak/docker,laijs/moby,paralin/docker,michelvocks/docker,kojiromike/docker,Ramzec/docker,cpuguy83/docker,endophage/docker,raja-sami-10p/moby,tmp6154/docker,yongtang/docker,xuxinkun/docker,allencloud/docker,KarthikNayak/docker,stevvooe/docker,rhatdan/docker,akira-baruah/docker,dccurtis/docker,ndeloof/docker,amatsus/docker,nawawi/docker,resin-io/docker,cyphar/docker,dmcgowan/docker,yosifkit/docker,bearstech/moby,jimjag/docker,tonistiigi/docker,justincormack/docker,stevvooe/docker,djs55/docker,michael-holzheu/docker,prertik/docker,Ramzec/docker,trebonian/docker,gjaskiewicz/moby,haveatry/docker,YuPengZTE/docker,cyphar/docker,msabansal/docker,bonczj/moby-json-file-logger,srust/docker,lixiaobing1/docker,diogomonica/docker,allencloud/docker,dgageot/docker,pramodhkp/moby,kojiromike/docker,HuKeping/docker,ibuildthecloud/docker,sfsmithcha/docker,tonistiigi/docker,harche/docker,Syntaxide/docker,pramodhkp/moby,estesp/docker,gjaskiewicz/moby,maxamillion/docker,naveed-jamil-tenpearls/moby,thaJeztah/docker,xuxinkun/docker,Mokolea/docker,mahak/docker,naveed-jamil-tenpearls/moby,JMesser81/docker,laijs/moby,noironetworks/docker,scotttlin/docker,kolyshkin/moby,Mokolea/docker,kojiromike/docker,pradipd/moby,amatsus/docker,paralin/docker,thtanaka/docker,kunalkushwaha/docker,johnstep/moby-moby,shhsu/docker,tklauser/docker,q384566678/docker,charleszheng44/moby,mikedougherty/docker,jwhonce/docker,dims/docker,konstruktoid/docker-upstream,crosbymichael/docker,jvanz/docker,mtesselH/docker,SvenDowideit/docker,maxamillion/docker,sarnautov/moby,hqhq/moby,mikedougherty/docker,unclejack/docker,konstruktoid/docker-1,tophj-ibm/docker,fcrisciani/docker,konstruktoid/docker-upstream,moul/docker,allencloud/docker,rhatdan/docker,paralin/docker,endophage/docker,whuwxl/docker,mstanleyjones/docker,portworx/docker,AkihiroSuda/docker,gschaetz/moby,SvenDowideit/docker,tagomoris/docker,alfred-landrum/docker,lixiaobing10051267/docker,ibuildthecloud/docker,maxamillion/docker,dims/docker,lixiaobing10051267/docker,charleszheng44/moby,nawawi/docker,cpuguy83/docker,shishir-a412ed/docker,xiaods/docker,Mokolea/docker,tagomoris/docker,jthelin/docker,thtanaka/docker,Mokolea/docker,shhsu/docker,trebonian/docker,Ramzec/docker,nawawi/docker,prertik/docker,KingEmet/docker,coolljt0725/docker,moul/docker,moby/moby,whuwxl/docker,mkumatag/docker,tonistiigi/docker,duglin/docker,ColinHebert/docker,msabansal/docker,noironetworks/docker,imkin/moby,mstanleyjones/docker,KingEmet/docker,jvanz/docker,yasiramin10p/moby,gjaskiewicz/moby,konstruktoid/docker-upstream,konstruktoid/docker-1,raja-sami-10p/moby,dsheets/moby,konstruktoid/docker-upstream,ripcurld0/moby,bonczj/moby-json-file-logger,laijs/docker,yasiramin10p/moby,kencochrane/docker,danyalKhaliq10p/moby,tianon/docker,tmp6154/docker,AkihiroSuda/docker,noironetworks/docker,jlhawn/docker,moypray/docker,sfsmithcha/docker,mixja/docker,x1022as/docker,laijs/docker,icaoweiwei/docker,mike1729/docker,michelvocks/docker,jwhonce/docker,x1022as/docker,mkumatag/docker,yummypeng/docker,unclejack/docker,sfsmithcha/docker,YuPengZTE/docker,sarnautov/moby,dsheets/moby,YuPengZTE/docker,Syntaxide/docker,michael-holzheu/docker,rancher/docker,KingEmet/docker,ibuildthecloud/docker,djs55/docker,gnailuy/docker,hqhq/moby,q384566678/docker,darrenstahlmsft/moby,sterchelen/docker,mike1729/docker,ripcurld0/moby,HideoYamauchi/docker,jimjag/docker,ndeloof/docker,bearstech/moby,yongtang/docker,mixja/docker,michelvocks/docker,JMesser81/docker,xiaods/docker,ibuildthecloud/docker,endophage/docker,diogomonica/docker,catinthesky/docker,kunalkushwaha/docker,PatrickLang/moby,moby/moby,cpuguy83/docker,mixja/docker,charleszheng44/moby,mkumatag/docker,alfred-landrum/docker,ffoysal/docker,harche/docker,unclejack/docker,HideoYamauchi/docker,duglin/docker,docker/docker,erikstmartin/docker,bonczj/moby-json-file-logger,mtrmac/docker,moypray/docker,ColinHebert/docker,afein/docker,yasiramin10p/moby,flavio/docker,erikstmartin/docker,konstruktoid/docker-1,vdemeester/docker,jvanz/docker,icaoweiwei/docker,coolljt0725/docker,kolyshkin/moby,AkihiroSuda/docker,mikebrow/docker,JMesser81/docker,dmcgowan/docker,HuKeping/docker,icaoweiwei/docker,KarthikNayak/docker,darrenstahlmsft/docker,trebonian/docker,kolyshkin/docker,danyalKhaliq10p/moby,thaJeztah/docker,nalind/docker,HuKeping/docker,thtanaka/docker,coreos/docker,liaoqingwei/docker,jwhonce/docker,kolyshkin/docker,johnstep/moby-moby,darrenstahlmsft/docker,darrenstahlmsft/docker,rancher/docker,tklauser/docker,dsheets/moby,laijs/moby,mikebrow/docker,tophj-ibm/moby,KarthikNayak/docker,afein/docker,moby/moby,imkin/moby,shishir-a412ed/docker,shishir-a412ed/docker,jimjag/docker,haveatry/docker,vdemeester/docker,mtesselH/docker,cpuguy83/docker,gnailuy/docker,docker/docker,raja-sami-10p/moby,liaoqingwei/docker,kencochrane/docker,jlhawn/docker,dgageot/docker,darrenstahlmsft/moby,SvenDowideit/docker,imkin/moby,pradipd/moby,tagomoris/docker,ibuildthecloud/docker,hqhq/moby,fcrisciani/docker,fcrisciani/docker,erikh/docker,nawawi/docker,PatrickLang/moby,coolljt0725/docker,yosifkit/docker,sdurrheimer/docker