Create FilterEngineTest.testFilterProperties test

[asmirnov]

Due to missing Filter.setProperty() it's impossible to do the test similar to ​https://hg.adblockplus.org/libadblockplus/file/tip/test/FilterEngine.cpp#l129.

smth like

@Test
    public void testFilterProperties()
    {
        Filter filter = filterEngine.getFilter("foo");

        assertTrue(filter.getProperty("stringFoo").isUndefined());
        assertTrue(filter.getProperty("intFoo").isUndefined());
        assertTrue(filter.getProperty("boolFoo").isUndefined());

        // TODO : since there is no setProperty for Filter finish the test later
    }

[asmirnov]

The tests are rewritten, the issue is deprecated.