Explicitly specify sysdba/masterkey pair for connection to FB service…

…s - see PYFB-69.

tests/bugs/core_3328.fbt

@@ -77,7 +77,13 @@ db_conn.close()
 # NOTE: this is NECESSARY if several instances are in work and we did not change
 # PATH variable before call this test!
 
-fb_home = services.connect(host='localhost').get_home_directory()
+# NB, 06.12.2016: as of  fdb 1.6.1 one need to EXPLICITLY specify user+password pair when doing connect 
+# via to FB services API by services.connect() - see FB tracker, PYFB-69
+# ("Can not connect to FB services if set ISC_USER & ISC_PASSWORD by os.environ[ ... ]")
+
+fb_home = services.connect(host='localhost', user= user_name, password= user_password).get_home_directory()
+#fb_home = services.connect(host='localhost').get_home_directory()
+
 if engine.startswith('2.5'):
   fb_home = fb_home + 'bin'+os.sep