Return no annotations if the annotationSelector is empty

[sodre]

This is the consistent behavior with cloud.gate.ac.uk.

zae-lambda-java-gate/src/main/java/co/zeroae/gate/App.java

Lines 238 to 242 in 4150079

	final AnnotationSet defaultAnnots = doc.getAnnotations();
	final Set<String> includeTypes = new HashSet<>(defaultAnnots.getAllTypes());
	if (annotationSelector != null)
	includeTypes.removeIf((type) -> !annotationSelector.contains(":" + type));
	exportOptions.put("annotationTypes", includeTypes);

[sodre]

However, we need to support the existing "export-all" behavior for our internal code-base. To that end, I will add a configuration flag to enforce/or not a strict annotation set.