init: add /etc/ssl/certs as required by the metadata package
init: add /etc/ssl/certs as required by the metadata package

The metadata package has binds
  - /dev
  - /var
  - /sys
  - /etc/resolv.conf
  - /etc/ssl/certs

but unfortunately `/etc/ssl/certs` doesn't exist and this causes the
following commands:

  cd blueprints/docker-for-mac # easy example
  moby build -name docker-for-mac base.yml docker-17.06-ce.yml
  linuxkit run hyperkit -networking=vpnkit -vsock-ports=2376 -disk size=500M docker-for-mac

to produce the following error on the VM console:

  container_linux.go:265: starting container process caused "process_linux.go:348: container init caused \"rootfs_linux.go:57: mounting \\\"/etc/ssl/certs\\\" to rootfs \\\"/containers/onboot/000-metadata/rootfs\\\" at \\\"/etc/ssl/certs\\\" caused \\\"stat /etc/ssl/certs: no such file or directory\\\"\""
  2017/08/21 16:39:40 Error creating 000-metadata: exit status 1

This patch creates /etc/ssl/certs in the `init` package. The metadata package
will now say things like

  2017/08/21 16:44:39 No metadata/userdata found. Bye

Signed-off-by: David Scott <63c9eb0ea83039690fefa11afe17873ba8278a56@docker.com>

davefreitag/linuxkit,zx2c4/linuxkit,davefreitag/linuxkit,YuPengZTE/linuxkit,linuxkit/linuxkit,ndauten/linuxkit,rn/linuxkit,zx2c4/linuxkit,t-koulouris/linuxkit,YuPengZTE/linuxkit,radu-matei/linuxkit,yankcrime/linuxkit,linuxkit/linuxkit,YuPengZTE/linuxkit,justincormack/linuxkit,eyz/linuxkit,konstruktoid/linuxkit,eyz/linuxkit,yankcrime/linuxkit,yankcrime/linuxkit,YuPengZTE/linuxkit,YuPengZTE/linuxkit,furious-luke/linuxkit,radu-matei/linuxkit,yankcrime/linuxkit,thebsdbox/linuxkit,konstruktoid/linuxkit,rn/linuxkit,justincormack/linuxkit,t-koulouris/linuxkit,JohnnyLeone/linuxkit,davefreitag/linuxkit,linuxkit/linuxkit,thebsdbox/linuxkit,YuPengZTE/linuxkit,konstruktoid/linuxkit,furious-luke/linuxkit,konstruktoid/linuxkit,eyz/linuxkit,zx2c4/linuxkit,justincormack/linuxkit,thebsdbox/linuxkit,thebsdbox/linuxkit,rn/linuxkit,thebsdbox/linuxkit,furious-luke/linuxkit,ndauten/linuxkit,deitch/linuxkit,eyz/linuxkit,furious-luke/linuxkit,djs55/linuxkit,djs55/linuxkit,deitch/linuxkit,ndauten/linuxkit,yankcrime/linuxkit,djs55/linuxkit,JohnnyLeone/linuxkit,justincormack/linuxkit,eyz/linuxkit,radu-matei/linuxkit,yankcrime/linuxkit,linuxkit/linuxkit,ndauten/linuxkit,deitch/linuxkit,mor1/linuxkit,mor1/linuxkit,radu-matei/linuxkit,rn/linuxkit,deitch/linuxkit,konstruktoid/linuxkit,JohnnyLeone/linuxkit,radu-matei/linuxkit,t-koulouris/linuxkit,ndauten/linuxkit,ndauten/linuxkit,justincormack/linuxkit,zx2c4/linuxkit,davefreitag/linuxkit,thebsdbox/linuxkit,t-koulouris/linuxkit,mor1/linuxkit,furious-luke/linuxkit,justincormack/linuxkit,deitch/linuxkit,t-koulouris/linuxkit,djs55/linuxkit,linuxkit/linuxkit,rn/linuxkit,JohnnyLeone/linuxkit,eyz/linuxkit,JohnnyLeone/linuxkit,zx2c4/linuxkit,konstruktoid/linuxkit,davefreitag/linuxkit,djs55/linuxkit,mor1/linuxkit,mor1/linuxkit