virt: Adds subtests variants name.

Signed-off-by: Jiří Župka <jzupka@redhat.com>
virt: Allows filter only subtests specific for test type.

Test type: qemu, libvirt, openvswitch, libguestfs.
Adds parameter "--type-specific" to command run.
By adding this parameter run filter only type specific subtests for
list and for running the tests.

Signed-off-by: Jiří Župka <jzupka@redhat.com>
virt: Adds qemu_img and bridge_mode process to general_options.

qemu_img is necessary for some libvirt and libguestfs tests.
bridge_mode is necessary for some libvirt and libguestfs tests too.

Signed-off-by: Jiří Župka <jzupka@redhat.com>
virt: Fix test directory tag name.

Removes from params shortname special characters like () and =

Signed-off-by: Jiří Župka <jzupka@redhat.com>
virt: Fix libguestfs test.cfg to be able be started with ./run

Signed-off-by: Jiří Župka <jzupka@redhat.com>
virt: Adds cart config variant name to file mapping.

Allows better tests printing.

Signed-off-by: Jiří Župka <jzupka@redhat.com>
virt: Improves list tests function.

Allow use the new params built-in variable which maps file to variant name.

Signed-off-by: Jiří Župka <jzupka@redhat.com>
virt: Makes ./run list-test and others list test function less verbose.

Returns back list-tests and others function to more clear way of output.
Repairs some other parts of dict name output.

Signed-off-by: Jiří Župka <jzupka@redhat.com>