subtests.docker_cli: Add run_ipc test

ISSUE: https://github.com/autotest/autotest-docker/issues/371#issuecomment-61664433
BUGS: _TBD (There are couple of bugs I haven't yet filled in BZ, please reveiw it and in the mean time I'll add the links); due of one bug the `host_hcont_c1cont` test fails, other tests should pass._

This test utilizes the '--ipc' feature of docker and uses SysV shm
to share data between various setups (host and guests).

Signed-off-by: Lukáš Doktor <ldoktor@redhat.com>

__NOTE__: I set the `no_iteration` to quite high number, you might need to decrease it on some older HW as the tests runs in parallel...
__NOTE2__: I'll implement the remaining `TODO:` tests as special tests later, this is only the basic functionality...
This could cause some confusion since *.cmd != *.cmd (type wise) which demands additional attention.  My braid sees 'cmd' and wants to believe it's always the same kind of "thing".  It also makes these kinds of conditional blocks necessary.  Maybe it could be a little more plain to use separate 'async_cmd' and 'bgjob_cmd' attributes?  It's maybe a small thing but would helpful to future maintainers :smile: