lxc-start-ephemeral needs to quote $line when echoing

[Serge Hallyn]

Same bug as in lxc-clone, occurs twice in lxc-start-ephemeral

SRU Justification
1. Impact: container configuration files for ephemeral containers can be corrupted
2. Development fix: quote a variable containing a configuration line to avoid expanding/globbing the contents
3. Stable fix: same as development fix
4. Test case:
   touch abc:abc
   sudo lxc-create -t ubuntu -n p1
   sudo lxc-start-ephemeral -o p1 -- /bin/bash
5. Regression potential: the contents of the line are not supposed to be expanded, so quoting $line is the riht thing to do and should cause no regressions.

[Launchpad Janitor (janitor)]

This bug was fixed in the package lxc - 0.8.0~rc1-4ubuntu6

---------------
lxc (0.8.0~rc1-4ubuntu6) quantal; urgency=low

  * debian/control: add apparmor to lxc Depends (LP: #997681)
  * debian/local/lxc-start-ephemeral: quote $line so its contents don't get
    expanded (LP: #997687)
 -- Serge Hallyn <email address hidden> Thu, 10 May 2012 09:04:29 -0700

[Martin Pitt (pitti)]

Hello Serge, or anyone else affected,

Accepted lxc into precise-proposed. The package will build now and be available in a few hours. Please test and give feedback here. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you in advance!

[Stéphane Graber (stgraber)]

Confirmed the fix using the package from -proposed.

[Launchpad Janitor (janitor)]

This bug was fixed in the package lxc - 0.7.5-3ubuntu56

---------------
lxc (0.7.5-3ubuntu56) precise-proposed; urgency=low

  * Fix Ubuntu template to install the host architecture of the required
    mutli-arch packages (when using qemu-user-static) instead of hardcoded
    "amd64" version. (LP: #999187)

lxc (0.7.5-3ubuntu55) precise-proposed; urgency=low

  * 0082-umount-old-proc: fix proc auto-mount. If /proc is already mounted,
    make sure that /proc/self points to 1, since we are container init.
    Otherwise, assume proc is an old one, and umount it and remount our own.
    If we keep the old proc mounted, apparmor transitions will by tried for
    wrong task and fail. Also move check for whether apparmor is enabled so
    that it is called by lxc-execute. (LP: #993706)
  * debian/control: add cloud-utils to lxc Recommends, as lxc-ubuntu-cloud
    needs it. (LP: #995361)
  * debian/lxc.upstart: load apparmor profiles before auto-starting containers.
    (LP: #989853)
  * debian/control: add apparmor to lxc Depends (LP: #997681)
  * debian/local/lxc-start-ephemeral: quote $line so its contents don't get
    expanded (LP: #997687)
 -- Stephane Graber <email address hidden> Tue, 15 May 2012 12:00:18 -0400