Changes

Summary

1. Serialize policies in service templates as lists (#216) (commit: 0ee8958) (details)

Commit 0ee8958d4881db0f4f1e0d2b3e7a769e9726dd48 by noreply Serialize policies in service templates as lists (#216) (commit: 0ee8958)
	org.eclipse.winery.repository/org.eclipse.winery.repository.common/src/test/java/org/eclipse/winery/repository/yaml/YamlReaderTest.java
	org.eclipse.winery.repository/org.eclipse.winery.repository.common/src/main/java/org/eclipse/winery/repository/converter/reader/YamlBuilder.java
	org.eclipse.winery.repository/org.eclipse.winery.repository.common/src/test/resources/yaml/simple-tests/valid-topology_templates-1_3.yml
	org.eclipse.winery.repository/org.eclipse.winery.repository.common/src/test/java/org/eclipse/winery/repository/yaml/YamlWriterTests.java
	org.eclipse.winery.repository/org.eclipse.winery.repository.common/src/main/java/org/eclipse/winery/repository/converter/writer/YamlWriter.java