Add image configuration tests
[Bug/Feature] Integration tests verifying containers' images
completeness. If the tests fail, the containers will
most probably not run under SCS.
The following elements are checked:
* existence of "security-containers" user with UID
of 377
* existence and correctness of dbus configuration
("security-containers" should be allowed to use
"org.tizen.containers.domain" socket)
The names and paths to the containers' root file
systems are extracted from SCS daemon and libvirt
configs (/etc/security-containers/).
[Cause] N/A
[Solution] N/A
[Verification] Build, install, run tests (sc_int_tests.py). Check
various scenarios: remove or corrupt dbus config
(etc/dbus-1/system.d/org.tizen.containers.domain.conf)
or libvirt's XML config, remove "security-containers"
user inside a container, change it's UID, etc.
Change-Id: I69782f348ecb1c6b63a60286a3a8ee4ae3f8465b
Signed-off-by: Michal Witanowski <m.witanowski@samsung.com>