PropertiesParser: Inconsistent Property and PropertyKey end offset

If the application.properties file looks like this:

exampleKey********

, where * represents whitespace, the Property and PropertyKey end offsets are different.

In the case above, the PropertyKey's start offset would be 0 and end offset would be 10. This range correctly captures the property key: exampleKey.

However, the Property's start offset would be 0 and end offset would be 18, which captures the property key and the whitespace that follows it.

To keep things consistent, it would be great if the Property's end offset matched the PropertyKey's end offset.

If this issue is fixed, here is a test case that should pass in com.redhat.microprofile.parser.PropertiesModelTest:

	@Test
	public void parsePropertyKeyWithTrailingSpaces() {
		String text = "exampleKey        ";
		PropertiesModel model = PropertiesModel.parse(text, "application.properties");
		assertModel(model, text.length(), 1);

		Node firstPropertyNode = model.getChildren().get(0);
		assertProperty(firstPropertyNode, 0, 10, 0, 10, "exampleKey", -1, -1, -1, null);
	}