use DOD_SDN from mocks

tests/domain/authnid/test_utils.py

@@ -1,12 +1,7 @@
 import pytest
 import atst.domain.authnid.utils as utils
+from tests.mocks import DOD_SDN
 
-DOD_SDN_INFO = {
-        'first_name': 'ART',
-        'last_name': 'GARFUNKEL',
-        'dod_id': '5892460358'
-    }
-DOD_SDN = f"CN={DOD_SDN_INFO['last_name']}.{DOD_SDN_INFO['first_name']}.G.{DOD_SDN_INFO['dod_id']},OU=OTHER,OU=PKI,OU=DoD,O=U.S. Government,C=US"
 
 def test_parse_sdn():
     parsed = utils.parse_sdn(DOD_SDN)