Add test cases for file mode with secret and config.
Add test cases for file mode with secret and config.

Signed-off-by: Yong Tang <765086fe2e0c1f980161f127fec596800f327f62@outlook.com>

jameszhan/docker,jimjag/docker,allencloud/docker,nalind/docker,tophj-ibm/moby,dccurtis/docker,dmcgowan/docker,jameszhan/docker,jwhonce/docker,pradipd/moby,bearstech/moby,konstruktoid/docker-upstream,jameszhan/docker,yongtang/docker,gnailuy/docker,YuPengZTE/docker,docker/docker,flavio/docker,kojiromike/docker,tophj-ibm/docker,rancher/docker,pradipd/moby,whuwxl/docker,maxamillion/docker,djs55/docker,yongtang/docker,jvanz/docker,yosifkit/docker,yongtang/docker,ibuildthecloud/docker,KarthikNayak/docker,flavio/docker,ibuildthecloud/docker,Mokolea/docker,tmp6154/docker,nalind/docker,kolyshkin/moby,rremer/moby,tophj-ibm/moby,whuwxl/docker,KarthikNayak/docker,x1022as/docker,johnstep/moby-moby,laijs/moby,paralin/docker,jlhawn/docker,crosbymichael/docker,duglin/docker,moul/docker,duglin/docker,tonistiigi/docker,johnstep/moby-moby,jwhonce/docker,konstruktoid/docker-1,dccurtis/docker,rremer/moby,SvenDowideit/docker,KarthikNayak/docker,moby/moby,Mokolea/docker,mahak/docker,estesp/docker,tonistiigi/docker,KingEmet/docker,noironetworks/docker,justincormack/docker,laijs/docker,moby/moby,konstruktoid/docker-upstream,AkihiroSuda/docker,ibuildthecloud/docker,bearstech/moby,vdemeester/docker,tmp6154/docker,dmcgowan/docker,tophj-ibm/docker,jimjag/docker,rancher/docker,trebonian/docker,konstruktoid/docker-1,paralin/docker,docker/docker,SvenDowideit/docker,cpuguy83/docker,justincormack/docker,whuwxl/docker,noironetworks/docker,Mokolea/docker,konstruktoid/docker-upstream,thaJeztah/docker,docker/docker,trebonian/docker,KingEmet/docker,YuPengZTE/docker,unclejack/docker,yosifkit/docker,tmp6154/docker,bearstech/moby,tophj-ibm/docker,SvenDowideit/docker,thaJeztah/docker,tophj-ibm/moby,trebonian/docker,crosbymichael/docker,scotttlin/docker,pradipd/moby,laijs/docker,Mokolea/docker,Ramzec/docker,djs55/docker,Ramzec/docker,Ramzec/docker,yosifkit/docker,mahak/docker,scotttlin/docker,moby/moby,nawawi/docker,cpuguy83/docker,dccurtis/docker,moul/docker,laijs/moby,justincormack/docker,scotttlin/docker,x1022as/docker,mahak/docker,vdemeester/docker,laijs/moby,jthelin/docker,gnailuy/docker,moby/moby,AkihiroSuda/docker,kolyshkin/docker,johnstep/moby-moby,noironetworks/docker,thaJeztah/docker,cpuguy83/docker,maxamillion/docker,moul/docker,unclejack/docker,jthelin/docker,rancher/docker,allencloud/docker,nalind/docker,maxamillion/docker,nawawi/docker,gnailuy/docker,kojiromike/docker,paralin/docker,kolyshkin/docker,ibuildthecloud/docker,nalind/docker,kolyshkin/moby,cpuguy83/docker,jvanz/docker,jvanz/docker,AkihiroSuda/docker,flavio/docker,moul/docker,nawawi/docker,YuPengZTE/docker,jlhawn/docker,kojiromike/docker,dims/docker,unclejack/docker,mikebrow/docker,dmcgowan/docker,KingEmet/docker,rremer/moby,allencloud/docker,ibuildthecloud/docker,thaJeztah/docker,jimjag/docker,tonistiigi/docker,trebonian/docker,dims/docker,mahak/docker,konstruktoid/docker-upstream,konstruktoid/docker-1,laijs/docker,djs55/docker,gnailuy/docker,AkihiroSuda/docker,jwhonce/docker,jimjag/docker,flavio/docker,bearstech/moby,paralin/docker,duglin/docker,mikebrow/docker,Ramzec/docker,estesp/docker,crosbymichael/docker,yosifkit/docker,x1022as/docker,nawawi/docker,estesp/docker,mikebrow/docker,dims/docker,kolyshkin/moby,vdemeester/docker,jlhawn/docker