Added feature to read Service Provider Name (SPN) from the SIM card

Change-Id: I8dc599a76c260ec2823ba5c9b22375b04a50daa8
diff --git a/pysim-testdata/Fairwaves-SIM.ok b/pysim-testdata/Fairwaves-SIM.ok
index 6150469..94df376 100644
--- a/pysim-testdata/Fairwaves-SIM.ok
+++ b/pysim-testdata/Fairwaves-SIM.ok
@@ -3,6 +3,9 @@
 ICCID: 8988219000000117833
 IMSI: 001010000000111
 SMSP: e1ffffffffffffffffffffffff0581005155f5ffffffffffff000000ffffffffffffffffffffffffffff
+SPN: Fairwaves
+Display HPLMN: False
+Display OPLMN: False
 PLMNsel: ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
 PLMNwAcT:
 	ffffff0000 # unused