sepolicy/interface: Use relative python 3 imports

Fixes:
Verify sepolicy interface -c -i works ... Traceback (most recent call last):
  File "/usr/bin/sepolicy", line 699, in <module>
    args.func(args)
  File "/usr/bin/sepolicy", line 508, in interface
    print_interfaces(args.interfaces, args)
  File "/usr/bin/sepolicy", line 492, in print_interfaces
    interface_compile_test(i)
  File "/usr/lib/python3.6/site-packages/sepolicy/interface.py", line 226, in interface_compile_test
    fd.write(generate_compile_te(interface, idict))
  File "/usr/lib/python3.6/site-packages/sepolicy/interface.py", line 184, in generate_compile_te
    from templates import test_module
ModuleNotFoundError: No module named 'templates'

Signed-off-by: Petr Lautrbach <plautrba@redhat.com>
1 file changed