ssl-opt.sh: change expected output for large srv packet test with SSLv3
ssl-opt.sh: change expected output for large srv packet test with SSLv3

This test also exercises a protection against BEAST
and should expect message splitting.
NXPmicro/mbedtls,ARMmbed/mbedtls,Mbed-TLS/mbedtls,ARMmbed/mbedtls,ARMmbed/mbedtls,NXPmicro/mbedtls,Mbed-TLS/mbedtls,NXPmicro/mbedtls,Mbed-TLS/mbedtls,ARMmbed/mbedtls,NXPmicro/mbedtls,Mbed-TLS/mbedtls