Add custom patch role scenario to 'application' role

This adds test case for when application_pre_install_role
and application_post_install_role are set to custom role;
by default they are empty.

Code condition coverage is increased.

Change-Id: I14e59e15cf3ead0459374b5777f8ee03fe75d7bd
Issue-ID: OOM-1910
Signed-off-by: Bartek Grzybowski <b.grzybowski@partner.samsung.com>
6 files changed