echo "" | openssl s_client -connect server-that-you-want-to-connect:port -showcerts 2>/dev/null | openssl x509 -out cert.pem
keytool -import -storepass changeit -noprompt -file cert.pem -cacerts
keytool -import -keystore $JAVA_HOME/lib/security/cacerts -storepass changeit -noprompt -file cert.pem -cacerts