test: lwm2m: Enable DTLS Connection ID

Enable connection ID because it is on by default on the
client example as well.

Signed-off-by: Seppo Takalo <seppo.takalo@nordicsemi.no>

tests/net/lib/lwm2m/interop/prj.conf

@@ -30,6 +30,7 @@ CONFIG_LWM2M_FIRMWARE_UPDATE_PULL_SUPPORT=y
 #LwM2M v1.1 configure
 CONFIG_LWM2M_VERSION_1_1=y
 CONFIG_LWM2M_DTLS_SUPPORT=y
+CONFIG_LWM2M_DTLS_CID=y
 CONFIG_LWM2M_RD_CLIENT_SUPPORT_BOOTSTRAP=y
 
 #Enable SenML JSON content format
@@ -60,6 +61,7 @@ CONFIG_LWM2M_QUEUE_MODE_ENABLED=y
 CONFIG_LWM2M_QUEUE_MODE_UPTIME=20
 CONFIG_LWM2M_UPDATE_PERIOD=30
 CONFIG_LWM2M_RD_CLIENT_STOP_POLLING_AT_IDLE=y
+CONFIG_LWM2M_SECONDS_TO_UPDATE_EARLY=1
 
 # LwM2M configuration as OMA-ETS-LightweightM2M_INT-V1_1-20190912-D Configuration 3
 CONFIG_LWM2M_ENGINE_DEFAULT_LIFETIME=30
@@ -68,6 +70,7 @@ CONFIG_LWM2M_SERVER_DEFAULT_PMAX=10
 
 CONFIG_MBEDTLS=y
 CONFIG_MBEDTLS_TLS_VERSION_1_2=y
+CONFIG_MBEDTLS_SSL_DTLS_CONNECTION_ID=y
 
 # Special MbedTLS changes
 CONFIG_MBEDTLS_ENABLE_HEAP=y