samples: net: aws_iot: Enable SNI for nRF7002 DK

AWS IoT require SNI for some certificate classes.
Enable by default, as debugging of these issues is difficult.

Signed-off-by: Jan Tore Guggedal <jantore.guggedal@nordicsemi.no>

samples/net/aws_iot/boards/nrf7002dk_nrf5340_cpuapp_ns.conf

@@ -62,6 +62,7 @@ CONFIG_MBEDTLS=y
 CONFIG_MBEDTLS_ENABLE_HEAP=y
 CONFIG_MBEDTLS_HEAP_SIZE=81920
 CONFIG_MBEDTLS_RSA_C=y
+CONFIG_MBEDTLS_SSL_SERVER_NAME_INDICATION=y
 
 # NET Sockets
 CONFIG_NET_SOCKETS_SOCKOPT_TLS=y