sip_to_pjsip: Write cos and tos.

When using the migration script sip_to_pjsip.py, both tos_sip and cos_sip got
missed, because of a typo. Therefore, cos and tos were not written to
pjsip.conf. Furthermore, that revealed a misuse of an internal function, caused
by a copy-and-paste error.

ASTERISK-22374

Change-Id: Id245ebadf70ab9776eb280c026288540af3af5c2

contrib/scripts/sip_to_pjsip/sip_to_pjsip.py

@@ -534,14 +534,14 @@ def set_transport_common(section, pjsip, nmapped):
         pass
 
     try:
-        set_value('tos', sip.get('general', 'sip_tos')[0], 'general', pjsip,
-                  nmapped, 'transport', section)
+        set_value('tos', sip.get('general', 'tos_sip')[0], section, pjsip,
+                  nmapped, 'transport')
     except LookupError:
         pass
 
     try:
-        set_value('cos', sip.get('general', 'sip_cos')[0], 'general', pjsip,
-                  nmapped, 'transport', section)
+        set_value('cos', sip.get('general', 'cos_sip')[0], section, pjsip,
+                  nmapped, 'transport')
     except LookupError:
         pass