pySim-read.py: Enable parsing of Home ePDG Identifier in USIM

As per TS 31.102, version 13.4.0 Release 13, this EF can found under ADF.USIM at File Id 6ff3.
Also, if service n°106 and service n°107 are available, this file shall be present.

Change-Id: I68114d328d1af5682a5bc1fa7642882e80b5de4d
diff --git a/pysim-testdata/sysmoUSIM-SJS1.ok b/pysim-testdata/sysmoUSIM-SJS1.ok
index fb8e472..55c43ad 100644
--- a/pysim-testdata/sysmoUSIM-SJS1.ok
+++ b/pysim-testdata/sysmoUSIM-SJS1.ok
@@ -138,5 +138,6 @@
 	Service 53 - Extension 8
 	Service 55 - MMS User Connectivity Parameters
 
+ePDGId: Can't read file -- SW match failed! Expected 9000 and got 6a82.
 Done !