Set default value of connection timeout to 5 seconds

It was previously set to 30 seconds which seems too long.

Author: lutovich

driver/src/main/java/org/neo4j/driver/v1/Config.java

@@ -187,7 +187,7 @@ public static class ConfigBuilder
         private TrustStrategy trustStrategy = trustAllCertificates();
         private int routingFailureLimit = 1;
         private long routingRetryDelayMillis = TimeUnit.SECONDS.toMillis( 5 );
-        private int connectionTimeoutMillis = (int) TimeUnit.SECONDS.toMillis( 30 );
+        private int connectionTimeoutMillis = (int) TimeUnit.SECONDS.toMillis( 5 );
 
         private ConfigBuilder() {}
 
@@ -386,6 +386,8 @@ public ConfigBuilder withRoutingRetryDelay( long delay, TimeUnit unit )
          * <p>
          * Timeout value should be greater or equal to zero and represent a valid {@code int} value when converted to
          * {@link TimeUnit#MILLISECONDS milliseconds}.
+         * <p>
+         * The default value of this parameter is {@code 5 SECONDS}.
          *
          * @param value the timeout duration
          * @param unit the unit in which duration is given

driver/src/test/java/org/neo4j/driver/internal/ConfigTest.java

@@ -106,7 +106,7 @@ public void shouldTurnOnLeakedSessionsLogging()
     public void shouldHaveDefaultConnectionTimeout()
     {
         Config defaultConfig = Config.defaultConfig();
-        assertEquals( TimeUnit.SECONDS.toMillis( 30 ), defaultConfig.connectionTimeoutMillis() );
+        assertEquals( TimeUnit.SECONDS.toMillis( 5 ), defaultConfig.connectionTimeoutMillis() );
     }
 
     @Test