core: Use version 3.0 instead of 2.2 in GetCommandsCompatibilityVersionsQueryTest

Uses version 3.0 instead of 2.2 for testing minimal compatibility
version in GetCommandsCompatibilityVersionsQueryTest.

Change-Id: I8b0236bf3ca6360d3fa483df9f23e5a1fe37457d
Bug-Url: https://bugzilla.redhat.com/1127590
Signed-off-by: Martin Perina <mperina@redhat.com>