SysmoISIM-SJA2: Add option to set Service Provider Name (SPN)

Same implementation as for sysmoUSIM-SJS1

Change-Id: I3a9dd2fe85126584758ea4cfa127f9cd14ab0c7d
diff --git a/pysim-testdata/sysmoISIM-SJA2.ok b/pysim-testdata/sysmoISIM-SJA2.ok
index b2de818..ae332a8 100644
--- a/pysim-testdata/sysmoISIM-SJA2.ok
+++ b/pysim-testdata/sysmoISIM-SJA2.ok
@@ -6,9 +6,9 @@
 GID1: ffffffffffffffffffff
 GID2: ffffffffffffffffffff
 SMSP: ffffffffffffffffffffffffffffffffffffffffffffffffe1ffffffffffffffffffffffff0581005155f5ffffffffffff000000
-SPN: Not available
-Display HPLMN: False
-Display OPLMN: False
+SPN: Magic
+Display HPLMN: True
+Display OPLMN: True
 PLMNsel: 00f110ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
 PLMNwAcT:
 	00f110ffff # MCC: 001 MNC: 001 AcT: UTRAN, E-UTRAN, GSM, GSM COMPACT, cdma2000 HRPD, cdma2000 1xRTT