Merge branch 'extractor_azure_impl' into 'master'

...ification/provider/azure/models/HandshakeRequestData.java

.../notification/provider/azure/models/NotificationData.java

...tification/provider/azure/models/NotificationRequest.java

...tion/provider/azure/pubsub/EventGridHandshakeHandler.java

.../provider/azure/pubsub/EventGridRequestBodyExtractor.java

.../osdu/notification/provider/azure/util/AppProperties.java

...du/notification/pubsub/EventGridHandshakeHandlerTest.java

...otification/pubsub/EventGridRequestBodyExtractorTest.java

...ation/provider/gcp/pubsub/PubsubRequestBodyExtractor.java

...ain/java/org/opengroup/osdu/notification/util/Config.java