SHA1 for certificate does not accept

[cuongrep]

We got a problem because the signed certificate for client using SHA 1.
Please replace

openssl x509 \
	-req \
	-in client/alice_csr.pem \
	-CA server/server_cert.pem \
	-CAkey server/server_key.pem \
	-out client/alice_cert.pem \
	-set_serial 01 \
	-days 365

by

openssl x509 \
	-sha256 \
	-req \
	-in client/alice_csr.pem \
	-CA server/server_cert.pem \
	-CAkey server/server_key.pem \
	-out client/alice_cert.pem \
	-set_serial 01 \
	-days 365