activemq-cpp wrapper ignores sec-ssl-truststore unless sec-ssl-truststore-key is set

[wardev]

When using a CA certificate file and activemq GMSEC_API ignores the CA certificate file unless sec-ssl-truststore-key is set to a non-empty string. See [1]. This is confusing for users since activemq-cpp does not have the capability to use a CA certificate file key. See [2].

Recommended fix is to pass along the sec-ssl-truststore value iff it is not empty, regardless of the value of sec-ssl-truststore-key.

[1] https://github.com/nasa/GMSEC_API/blob/master/wrapper/activemq/src/CMSConnection.cpp#L687
[2] https://github.com/apache/activemq-cpp/blob/d6f76ede90d21b7ee2f0b5d4648e440e66d63003/activemq-cpp/src/main/decaf/internal/net/ssl/openssl/OpenSSLContextSpi.cpp#L238

[bpfoster]

It looks to me like this may have been addressed in API v5.0?

https://github.com/nasa/GMSEC_API/blob/API-5.0-release/wrapper/activemq/src/CMSConnection.cpp#L629-L636