Exclude the root path from mount point paths.
Exclude the root path from mount point paths.

This change was necessary for me to get criu/libcontainer running inside of Docker.

Docker-DCO-1.1-Signed-off-by: Ross Boucher <rboucher@gmail.com> (github: boucher)

booyaa/runc,ddnbgroup/runc,liuwharton/runc,ekuric/runc,estesp/runc,dqminh/runc,sunyuan3/runc,nkwilson/runc,kolyshkin/runc,sallyom/runc,booyaa/runc,avagin/runc,ZJU-SEL/runc,markllama/runc,cyphar/runc,runcom/runc,opencontainers/runc,abduld/runc,cloudfoundry-incubator/runc,inatatsu/runc,estesp/libcontainer,shenxiaochen/libcontainer,whuwxl/libcontainer,wking/runc,nkwilson/runc,abduld/runc,BrickXu/libcontainer,clnperez/runc,hxfeng/runc,keloyang/runc,ddnbgroup/runc,jwuwork/runc,dqminh/runc,navidshaikh/runc,dqminh/libcontainer,axsh/runc,kolyshkin/runc,haijunTan/runc,ycaihua/libcontainer,cyphar/runc,aidanhs/runc,mheon/runc,stefanberger/runc,tangkun75/libcontainer,kimh/runc,boucher/runc,ChengTiesheng/runc,ZJU-SEL/runc,jhowardmsft/runc,whuwxl/libcontainer,InformatiQ/runc,avagin/runc,calavera/runc,wangkirin/runc,hqhq/runc,han-wang/runc,mrunalp/runc,coolljt0725/runc,keloyang/runc,coolljt0725/runc,zenlinTechnofreak/runc,shishir-a412ed/runc,ycaihua/runc,jhjeong-kr/runc,hqhq/libcontainer,zhangyancoder/libcontainer,hxfeng/runc,shenxiaochen/libcontainer,lizf-os/runc,vbatts/runc,subuser-security/runc,thaJeztah/libcontainer,Microsoft/libcontainer,han-wang/runc,InformatiQ/runc,wcwxyz/runc,laijs/runc,stefanberger/runc,intfrr/runc,stefanberger/runc,crosbymichael/runc,adrianreber/runc,abduld/runc,talwai/runc,rsampaio/runc,HardikDR/runc,markllama/runc,crosbymichael/runc,dqminh/runc,albertoleal/runc,gitido/runc,rhatdan/runc,dqminh/libcontainer,mikebrow/runc,LK4D4/runc,ycaihua/runc,ekuric/runc,kolyshkin/runc,YujiOshima/runc,willmtemple/runc,cyphar/runc,adrianreber/runc,zhangyancoder/libcontainer,subuser-security/runc,rsampaio/runc,opencontainers/runc,marcosnils/runc,dqminh/libcontainer,wking/runc,LTD-Beget/libcontainer,fabiokung/runc,LTD-Beget/libcontainer,thaJeztah/libcontainer,mapk0y/runc,keloyang/libcontainer,jwuwork/runc,gitido/runc,whuwxl/libcontainer,crosbymichael/runc,ycaihua/libcontainer,rhatdan/runc,shishir-a412ed/runc,opencontainers/runc,wangkirin/runc,intfrr/runc,cxxly/runc,zhangyancoder/libcontainer,marcosnils/runc,keloyang/libcontainer,xiaochenshen/runc,navidshaikh/runc,hqhq/libcontainer,LK4D4/runc,estesp/runc,docker/libcontainer,avagin/runc,balajibr/runc,albertoleal/runc,sallyom/runc,zenlinTechnofreak/runc,runcom/runc,chenchun/runc,navidshaikh/runc,subuser-security/runc,BrickXu/libcontainer,vbatts/runc,rajasec/runc,runcom/libcontainer,meihuabo/runc,carlye566/runc,kimh/runc,talwai/runc,justincormack/runc,calavera/runc,dieface/runc,cloudfoundry-incubator/runc,mrunalp/runc,kolyshkin/runc,ZJU-SEL/runc,thaJeztah/libcontainer,ChengTiesheng/runc,keloyang/libcontainer,willmtemple/runc,runcom/libcontainer,mikebrow/runc,jhjeong-kr/runc,balajibr/runc,cxxly/runc,inatatsu/runc,opencontainers/runc,fabiokung/runc,gitido/runc,rhatdan/libcontainer,maxamillion/runc,keloyang/runc,rootfs/runc,chenchun/runc,aidanhs/runc,mheon/runc,boucher/runc,axsh/runc,jwuwork/runc,willmtemple/runc,maxamillion/runc,mYmNeo/runc,dieface/runc,docker/libcontainer,rhatdan/runc,YujiOshima/runc,hqhq/libcontainer,liuwharton/runc,runcom/runc,mapk0y/runc,ekuric/runc,rhatdan/libcontainer,dieface/runc,zenlinTechnofreak/runc,mheon/runc,whosthatknocking/runc,HuKeping/runc,WeiZhang555/runc,justincormack/runc,ycaihua/runc,HuKeping/runc,axsh/runc,docker/runc,estesp/runc,hqhq/runc,mikebrow/runc,docker/libcontainer,mYmNeo/runc,estesp/libcontainer,booyaa/runc,whosthatknocking/runc,justincormack/runc,coolljt0725/runc,HardikDR/runc,clnperez/runc,rhatdan/libcontainer,han-wang/runc,meihuabo/runc,xiaochenshen/runc,wangkirin/runc,w4ngyi/libcontainer,xiaochenshen/runc,ycaihua/libcontainer,albertoleal/runc,HuKeping/runc,w4ngyi/libcontainer,laijs/runc,docker/runc,marcosnils/runc,HardikDR/runc,carlye566/runc,whosthatknocking/runc,LTD-Beget/libcontainer,InformatiQ/runc,sunyuan3/runc,calavera/runc,shenxiaochen/libcontainer,wking/runc,fabiokung/runc,Microsoft/libcontainer,vbatts/runc,rootfs/runc,carlye566/runc,runcom/libcontainer,rajasec/runc,aidanhs/runc,maxamillion/runc,ddnbgroup/runc,clnperez/runc,ChengTiesheng/runc,rootfs/runc,boucher/runc,shishir-a412ed/runc,wcwxyz/runc,meihuabo/runc,jhowardmsft/runc,tangkun75/libcontainer,hxfeng/runc,inatatsu/runc,cxxly/runc,mapk0y/runc,tangkun75/libcontainer,laijs/runc,w4ngyi/libcontainer,rsampaio/runc,nkwilson/runc,dqminh/runc,kimh/runc,lizf-os/runc,LK4D4/runc,lizf-os/runc,sunyuan3/runc,sallyom/runc,talwai/runc,keloyang/libcontainer,liuwharton/runc,wcwxyz/runc,mYmNeo/runc,rhatdan/runc,intfrr/runc,adrianreber/runc,WeiZhang555/runc,balajibr/runc,WeiZhang555/runc,Microsoft/libcontainer,haijunTan/runc,hqhq/runc,haijunTan/runc,chenchun/runc,estesp/libcontainer,rajasec/runc,cloudfoundry-incubator/runc,markllama/runc,gwoo/runc,YujiOshima/runc,docker/runc,jhjeong-kr/runc,jhowardmsft/runc,mrunalp/runc,BrickXu/libcontainer