JVMCBC-1144: Trust well-known certificate authorities unless another trust source is provided

We can now use the default trust source for non-Capella clusters.

Change-Id: Ic540c873295aba9e9f9d9aeb07481ca6edb0e689
Reviewed-on: https://review.couchbase.org/c/couchbase-jvm-clients/+/181475
Reviewed-by: David Nault <[email protected]>
Tested-by: Build Bot <[email protected]>

Author: programmatix

core-io/src/main/java/com/couchbase/client/core/util/ConnectionStringUtil.java

@@ -228,15 +228,6 @@ public static void checkConnectionString(CoreEnvironment env, boolean ownsEnviro
     }
 
     boolean capella = isCapella(connStr);
-    if (tls && !userSpecifiedTrustSource(env.securityConfig()) && !capella) {
-      // Default trust source only works with Capella.
-      throw InvalidArgumentException.fromMessage(
-          "When TLS is enabled, the cluster environment's security config must specify" +
-              " either the Certificate Authority certificate(s) to trust," +
-              " or the trust manager factory to use." +
-              " (Unless connecting to cloud.couchbase.com.)"
-      );
-    }
 
     if (capella && !tls) {
       // Can't connect to Capella without TLS. Until we determine