Merge branch 'automation/implement-ztpUpdate-rpc' into 'develop'

proto/automation.proto

...in/java/eu/teraflow/automation/AutomationGatewayImpl.java

...c/main/java/eu/teraflow/automation/AutomationService.java

...in/java/eu/teraflow/automation/AutomationServiceImpl.java

...c/main/java/eu/teraflow/automation/ContextSubscriber.java

...tion/src/main/java/eu/teraflow/automation/Serializer.java

...rc/main/java/eu/teraflow/automation/model/DeviceRole.java

...n/java/eu/teraflow/automation/model/DeviceRoleConfig.java

.../main/java/eu/teraflow/automation/model/DeviceRoleId.java

...st/java/eu/teraflow/automation/AutomationServiceTest.java

.../src/test/java/eu/teraflow/automation/SerializerTest.java

.../target/generated-sources/grpc/automation/Automation.java

.../generated-sources/grpc/automation/AutomationService.java

...erated-sources/grpc/automation/AutomationServiceBean.java

...ated-sources/grpc/automation/AutomationServiceClient.java

...erated-sources/grpc/automation/AutomationServiceGrpc.java

...-sources/grpc/automation/MutinyAutomationServiceGrpc.java

src/automation/target/kubernetes/kubernetes.yml