Update plamo template
Update plamo template

- If "installpkg" command does not exist, lxc-plamo temporarily
  install the command with static linked tar command into the lxc
  cache directory.  The tar command does not refer to passwd/group
  files, which means that only a few files/directories are extracted
  with wrong user/group ownership.  To avoid this, the installpkg
  command now uses the standard tar command in the system.
- Change mode to 666 for $rootfs/dev/null to allow write access for
  all users.
- Small fix in usage message.

Signed-off-by: TAMUKI Shoichi <3c93446879a34d22ef90842b53f301505d448898@linet.gr.jp>
Acked-by: Stéphane Graber <089afc6d81f66f1168a9849e15660feae286e024@ubuntu.com>
Acked-by: KATOH Yasufumi <512423cb3a4857a38f472862b51e4ab1a1730f06@jazz.email.ne.jp>

Distrotech/lxc,cjwatson/lxc,LynxChaus/lxc,akshaykarle/lxc,codebauss/lxc,GreatFruitOmsk/lxc,hfuCN/lxc,cjwatson/lxc,ksperis/lxc,raspberrypython/lxc,sapun/lxc,ysbnim/lxc,major/lxc,szaszg/lxc,Ponce/lxc,QingweiPeterLan/cs188-lxc,lisongmin/lxc,raspberrypython/lxc,hkjolhede/lxc,hallyn/lxc,thmo/lxc,weizhenwei/lxc,thmo/lxc,ksperis/lxc,bostjan/lxc,weizhenwei/lxc,tych0/lxc,ioops/lxc,rowhit/lxc,caglar10ur/lxc,jirislaby/lxc,QingweiPeterLan/cs188-lxc,DarknessBeforeDawn/lxc,DarknessBeforeDawn/lxc,bostjan/lxc,efiop/lxc,fwilson42/lxc,ecarrara/lxc,Ponce/lxc,armcc/lxc,regit/lxc,hfuCN/lxc,lisongmin/lxc,ioops/lxc,GreatFruitOmsk/lxc,yubo/lxc,bmoar/lxc,rldleblanc/lxc,hallyn/lxc,Pelagicore/lxc,szaszg/lxc,virajs/lxc,caglar10ur/lxc,cjwatson/lxc,JohnPeacockMessageSystems/lxc,GreatFruitOmsk/lxc,ss1h2a3tw/lxc,major/lxc,akshaykarle/lxc,rldleblanc/lxc,regit/lxc,fwilson42/lxc,christiaan/lxc,sapun/lxc,akshaykarle/lxc,weizhenwei/lxc,fwilson42/lxc,ysbnim/lxc,ecarrara/lxc,hkjolhede/lxc,LynxChaus/lxc,federicobriata/lxc,ioops/lxc,hfuCN/lxc,bmoar/lxc,virajs/lxc,virajs/lxc,armcc/lxc,ss1h2a3tw/lxc,christiaan/lxc,armcc/lxc,terceiro/lxc,aeris/lxc,sapun/lxc,terceiro/lxc,jirislaby/lxc,aeris/lxc,JohnPeacockMessageSystems/lxc,raspberrypython/lxc,regit/lxc,yubo/lxc,szaszg/lxc,lazy404/lxc,caglar10ur/lxc,ecarrara/lxc,rowhit/lxc,tych0/lxc,rldleblanc/lxc,hkjolhede/lxc,ksperis/lxc,QingweiPeterLan/cs188-lxc,LynxChaus/lxc,codebauss/lxc,Distrotech/lxc,rowhit/lxc,codebauss/lxc,bmoar/lxc,ss1h2a3tw/lxc,Pelagicore/lxc,efiop/lxc,thmo/lxc,tych0/lxc,federicobriata/lxc,christiaan/lxc,hallyn/lxc,bostjan/lxc,JohnPeacockMessageSystems/lxc,Distrotech/lxc,aeris/lxc,Pelagicore/lxc,DarknessBeforeDawn/lxc,lazy404/lxc,lisongmin/lxc,yubo/lxc,efiop/lxc,ysbnim/lxc,lazy404/lxc,terceiro/lxc,Ponce/lxc,major/lxc,federicobriata/lxc,jirislaby/lxc