CR deletion must check that all the headers are present before proceeding

At KubernetesClientResource.deleteCR() method, the created kubernetes resource requires org.etsi.osl.prefixName header. If the header is not available, the "name" property is not set and it acts as a wildcard, deleting all CRs.

https://labs.etsi.org/rep/osl/code/org.etsi.osl.cridge/-/blob/develop/src/main/java/org/etsi/osl/cridge/KubernetesClientResource.java?ref_type=heads#L470