ttcn3-asterisk: pjsip.conf: Update config name s/ims_aka/volte/g

The config key was renamed today, so update the tests to avoid failing
reading the config file.

Change-Id: I29d8ecb0f514de4745de22711234b0d514b2eb39
---
M ttcn3-asterisk-ims-ue-test/asterisk/pjsip.conf
1 file changed, 14 insertions(+), 2 deletions(-)

diff --git a/ttcn3-asterisk-ims-ue-test/asterisk/pjsip.conf b/ttcn3-asterisk-ims-ue-test/asterisk/pjsip.conf
index bd33845..b735388 100644
--- a/ttcn3-asterisk-ims-ue-test/asterisk/pjsip.conf
+++ b/ttcn3-asterisk-ims-ue-test/asterisk/pjsip.conf
@@ -95,7 +95,7 @@
 retry_interval=30
 fatal_retry_interval=30
 expiration=600000
-ims_aka=yes
+volte=yes
 contact_user=volte_ims
 imei=35876110-027790-0
 endpoint=volte_ims
@@ -113,7 +113,7 @@
 aors=volte_ims
 rewrite_contact=yes
 direct_media=no
-ims_aka=yes
+volte=yes
 100rel=peer_supported
 moh_passthrough=yes
 

