Improve kie server error messges

Hi,

have recently had an issue where we tried to issue kie-server-client requests against kie-server via https/ssl. kie server was using a self signed certificate, so further configuration was needed to solve it(i.e. adding a truststore to kie-server-client jvm).

Unfortunately, when we originally hit this issue, the error in the logs was very cryptic and not descriptive at all.

Only after turning log level to DEBUG, the true root cause of communication failure was discovered.

Therefore, we would like to ask to improve log messages - adding root cause to the logs.

Info level only includes this:

Caused by: org.kie.server.common.rest.NoEndpointFoundException: No available endpoints found

But debug level includes also this:

[main] DEBUG org.kie.server.client.impl.AbstractKieServicesClientImpl - Marking endpoint 'https://payoff-decision-manager-kieserver-pay-off-manager-test.server./services/rest/server' as failed due to PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target

I am attaching INFO vs DEBUG logs for comparison.