Added ospf-asp and ospf-asa export to SKV too.
Somewhat refactored root fetching; now it's accessed via accessor get_root() => can be overridden in subclasses if need be.
Converted rid handling to use get_rid() instead of doing it directly.
Added more descriptive assertion to assert_equals.
Moved testing utilities from hp_core_spec to mst_test.
Changed to use self.rid - otherwise loops may occur.
Stand-alone require fix + one more utility function.
Changed missing ip to debug, instead of an assert.
Added OSPF integration (to do: test it).