dir for tests created, better destinguish between code and tests
first move hostnet6_tests.py
due to new directory tests makefile target tests was renamed to test_all
test_hostnet6 now imports adm6.hostnet6, works fine
test_adm6configparser now imports adm6.adm6configparser
test_filter6 now imports from adm6.filter6
Makefile now executes all tests in tests/