saip.personalization: Fix encoding of ICCID in ProfileHeader

To make things exciting, they decided that the ICCID in the profile
header is encoded different from the ICCID contained in EF.ICCID...

Change-Id: I5eacdcdc6bd0ada431eb047bfae930d79d6e3af8
diff --git a/pySim/esim/saip/personalization.py b/pySim/esim/saip/personalization.py
index 3dad208..dc3435b 100644
--- a/pySim/esim/saip/personalization.py
+++ b/pySim/esim/saip/personalization.py
@@ -77,7 +77,7 @@
 
     def apply(self, pes: ProfileElementSequence):
         # patch the header
-        pes.get_pe_for_type('header').decoded['iccid'] = self.value
+        pes.get_pe_for_type('header').decoded['iccid'] = h2b(rpad(self.value, 20))
         # patch MF/EF.ICCID
         file_replace_content(pes.get_pe_for_type('mf').decoded['ef-iccid'], h2b(enc_iccid(self.value)))