test: put each arg in a separate string

Each arg to docker run should be placed in a separate string.
Otherwise, when starting the command via exec.Cmd, the command is
interpreted as "echo test", which can't be found.
test: fix TestCreateStartRestartStopStartKillRm

cat needs stdin opened, otherwise it dies immediately.
test: skip TestCreate on Fedora due to lxc utils bug

In the dind environment running on a Fedora host, the lxc utils get
confused by the /sys/fs/cgroup/cpuacct,cpu cgroup mount and lxc-start
fails trying to access the wrong cgroup directory.
test: 2 second timeout (not 2000)
test: fix TestRmi race condition
test: remove extra args in TestExitCode

The extra blank argument isn't needed and confuses libvirt.
speedup docker ps
improve tests on the engine
rename file to remove testing flags from docker binary
Pip python deps to a specific version
Offline Image Transfers #1155
Adding version info, switching to defer for cleanup
Adding spaces to fix docs build
Setting offline package version to 1.0
Fixing build
Adding content type to images/(name)/get
Adding 1.7 documentation
Fix error checks for offline transfer and remove unneeded debug output
Add typo in remove all. Ensure tmpDir is removed
Merge pull request #1974 from dotcloud/1155-offline-image-transfer

Implement offline image transfers