Modify Azure Function App and Service Bus sample

[paolosalvatori]

Motivation

This pull request contains some improvements I made to the Azure Function App and Service Bus sample sample while troubleshooting issues with messaging in the Service Bus emulator.

Changes

This pull request introduces the following changes:

• .gitignore: Added publish/ folder to the list of folders to ignore.
• samples/function-app-service-bus/dotnet/README.md: Added sample output for the call-http-trigger.sh script.
• samples/function-app-service-bus/dotnet/scripts/deploy.sh: Added commands to check whether the application-insights az extension is installed. If not, the extension is installed.
• samples/function-app-service-bus/dotnet/src/GreetingFunctions.cs: Modified the code to collect the messages sent and received by all the functions in circular buffer.

{
  "requester": {
    "sent": [
      "Paolo",
      "Max"
    ]
  },
  "handler": {
    "received": [
      "Paolo",
      "Max"
    ],
    "sent": [
      "Welcome Paolo, glad you're here!",
      "Salutations Max, how's everything going?"
    ]
  },
  "consumer": {
    "received": [
      "Welcome Paolo, glad you're here!",
      "Salutations Max, how's everything going?"
    ]
  }
}

Tests

The new version was tested locally.