build: spec: rhel-7 support

Changes based on http://gerrit.ovirt.org/#/c/29225

There is no mockito package available on rhel so we had to introduce
2 maven profiles. One to build without tests (default) and the other to
build with tests.

Change-Id: Id464fbcdf716a47cf70f599996fbd41a53b4e000
Signed-off-by: pkliczewski <piotr.kliczewski@gmail.com>
Signed-off-by: Alon Bar-Lev <alonbl@redhat.com>