Limit use of useSSL flag to MySQL container

Add template method allowing JDBCContainer subclasses to have a specific
form of JDBC URL used for establishing Connections.

Fixes #568

modules/jdbc/src/main/java/org/testcontainers/containers/JdbcDatabaseContainer.java

@@ -71,7 +71,7 @@ public SELF withUsername(String username) {
         throw new UnsupportedOperationException();
     }
 
-    public SELF withPassword(String password){
+    public SELF withPassword(String password) {
         throw new UnsupportedOperationException();
     }
 
@@ -127,16 +127,17 @@ public Driver getJdbcDriverInstance() {
     /**
      * Creates a connection to the underlying containerized database instance.
      *
-     * @param queryString any special query string parameters that should be appended to the JDBC connection URL. The
-     *                    '?' character must be included
+     * @param queryString
+     *          query string parameters that should be appended to the JDBC connection URL.
+     *          The '?' character must be included
      * @return a Connection
      * @throws SQLException if there is a repeated failure to create the connection
      */
     public Connection createConnection(String queryString) throws SQLException {
         final Properties info = new Properties();
         info.put("user", this.getUsername());
         info.put("password", this.getPassword());
-        final String url = appendDisableSslConfig(this.getJdbcUrl() + queryString);
+        final String url = constructUrlForConnection(queryString);
 
         final Driver jdbcDriverInstance = getJdbcDriverInstance();
 
@@ -147,9 +148,18 @@ public Connection createConnection(String queryString) throws SQLException {
         }
     }
 
-    private String appendDisableSslConfig(String connectionString){
-      String separator = connectionString.contains("?") ? "&" : "?";
-      return connectionString + separator + "useSSL=false";
+    /**
+     * Template method for constructing the JDBC URL to be used for creating {@link Connection}s.
+     * This should be overridden if the JDBC URL and query string concatenation or URL string
+     * construction needs to be different to normal.
+     *
+     * @param queryString
+     *          query string parameters that should be appended to the JDBC connection URL.
+     *          The '?' character must be included
+     * @return a full JDBC URL including queryString
+     */
+    protected String constructUrlForConnection(String queryString) {
+        return getJdbcUrl() + queryString;
     }
 
     protected void optionallyMapResourceParameterAsVolume(@NotNull String paramName, @NotNull String pathNameInContainer, @NotNull String defaultResource) {

modules/mysql/src/main/java/org/testcontainers/containers/MySQLContainer.java

@@ -54,6 +54,12 @@ public String getJdbcUrl() {
         return "jdbc:mysql://" + getContainerIpAddress() + ":" + getMappedPort(MYSQL_PORT) + "/" + databaseName;
     }
 
+    @Override
+    protected String constructUrlForConnection(String queryString) {
+        String separator = queryString.contains("?") ? "&" : "?";
+        return getJdbcUrl() + separator + "useSSL=false";
+    }
+
     @Override
     public String getDatabaseName() {
         return databaseName;