examples/ipsec-secgw: replace strncpy with strlcpy
examples/ipsec-secgw: replace strncpy with strlcpy

Use strlcpy instead of strncpy.
Use strcpy where boundchecks on destination is not needed.

Fixes: 0d547ed037 ("examples/ipsec-secgw: support configuration file")
Fixes: 07b156199f ("examples/ipsec-secgw: fix configuration string termination")
Fixes: a1469c319f ("examples/ipsec-secgw: fix configuration parsing")
Cc: stable@dpdk.org

Signed-off-by: Reshma Pattan <4d9eb35579760ed1c2db754a6b402039c9c8a1cb@intel.com>
Acked-by: Pablo de Lara <28355d9cfe41bb8148aea0fb24f47aae8f4217a1@intel.com>

john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk