Migrate over to using pyosmocom

We're creating a 'pyosmocom' pypi module which contains a number of core
Osmocom libraries / interfaces that are not specific to SIM card stuff
contained here.

The main modules moved in this initial step are pySim.tlv, pySim.utils
and pySim.construct. utils is split, not all of the contents is
unrelated to SIM Cards.  The other two are moved completely.

Change-Id: I4b63e45bcb0c9ba2424dacf85e0222aee735f411

pySim/ts_31_104.py

@@ -20,9 +20,9 @@ Support for 3GPP TS 31.104 V17.0.0
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 
+from osmocom.utils import *
+from osmocom.tlv import *
 from pySim.filesystem import *
-from pySim.utils import *
-from pySim.tlv import *
 from pySim.ts_31_102 import ADF_USIM
 from pySim.ts_51_011 import EF_IMSI, EF_AD
 import pySim.ts_102_221