Change p4rtc_server default value

Change-Id: Ic344d4ef64b9cf676e5c4ac32444d3b0ef5e11da
diff --git a/omec/omec-upf-pfcp-agent/values.yaml b/omec/omec-upf-pfcp-agent/values.yaml
index bdf0bd8..ffbdf71 100644
--- a/omec/omec-upf-pfcp-agent/values.yaml
+++ b/omec/omec-upf-pfcp-agent/values.yaml
@@ -43,5 +43,5 @@
         enable_p4rt: true
         p4rtciface:
           access_ip: "172.17.0.1/32"
-          p4rtc_server: "onos"
+          p4rtc_server: "onos-tost-onos-classic-hs.tost"
           p4rtc_port: "51001"