Merge branch 'feat/138-ubi-error-handling-in-ztp-component-3' into 'develop'

src/ztp/src/main/java/org/etsi/tfs/ztp/ZtpServiceImpl.java

...si/tfs/ztp/exception/ExternalServiceFailureException.java

...a/org/etsi/tfs/ztp/exception/GeneralExceptionHandler.java

src/ztp/src/main/resources/application.yml

...get/generated-sources/grpc/context/ContextOuterClass.java

...target/generated-sources/grpc/context/ContextService.java

...et/generated-sources/grpc/context/ContextServiceBean.java

.../generated-sources/grpc/context/ContextServiceClient.java

...et/generated-sources/grpc/context/ContextServiceGrpc.java

...erated-sources/grpc/context/MutinyContextServiceGrpc.java

src/ztp/target/kubernetes/kubernetes.yml