pySim-read: adjust meaning of HPLMN/OPLMN flags in EF_SPN

The updated wording better reflects the actual meaning
of a set or unset flag, especially as OPLMN is inverted.

Change-Id: I65c6f0e9bc1a12a4a74c4274eebb8e612296888f
diff --git a/pysim-testdata/Fairwaves-SIM.ok b/pysim-testdata/Fairwaves-SIM.ok
index eebf965..2a912e2 100644
--- a/pysim-testdata/Fairwaves-SIM.ok
+++ b/pysim-testdata/Fairwaves-SIM.ok
@@ -7,8 +7,8 @@
 GID2: ffffffffffffffff
 SMSP: e1ffffffffffffffffffffffff0581005155f5ffffffffffff000000ffffffffffffffffffffffffffff
 SPN: Fairwaves
-Display HPLMN: False
-Display OPLMN: False
+Show in HPLMN: False
+Hide in OPLMN: False
 PLMNsel: ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
 PLMNwAcT:
 	ffffff0000 # unused