Server is not compliant by sending a PEM encoded certificate in endpoints and for secure connections

[mregen]

The released Umati sample server sends a PEM encoded certificate instead of a ASN.1 encoded cert in endpoints and for secure connections. Not sure if this is a configuration issue or the underlying stack, but I guess the former and the stack allows it.

As a result, compliant client SDK which follow the spec can not connect with security.

[GoetzGoerisch]

@ccvca please look into this.

[ccvca]

Confirmed.

PEM-Certificate for these security policies:
http://opcfoundation.org/UA/SecurityPolicy#Aes256_Sha256_RsaPss
http://opcfoundation.org/UA/SecurityPolicy#Aes128_Sha256_RsaOaep

DER-Certificates for:
http://opcfoundation.org/UA/SecurityPolicy#None
http://opcfoundation.org/UA/SecurityPolicy#Basic256Sha256

[ccvca]

Resolved by fixing open62541:
open62541/open62541#6955