SDK Connection Strings

[TimothyMothra]

Application Insights will start to support Connection Strings.
This will simplify the endpoint configuration necessary for some of our customers, specifically for customers that have a business need to connect to specific Azure Regions.
The Azure Portal will start displaying Connection Strings this week.
There will be an official blog post at a later date.

Ruleset

1. check for explicit endpoint (location is ignored)
2. check for endpoint suffix (location is optional)
3. use classic endpoint (location is ignored)

Design

• New property: TelemetryConfiguration.ConnectionString
• New method: TelemetryConfiguration.SetConnectionString())
  Connection string needs to be parsed (via EndpointProvider) and validated.
  This method will set TelemetryConfiguration.InstrumentationKey.
  Resulting endpoints are set to TelemetryConfiguration.Endpoints (EndpointContainer).
  This method will also update TelemetryChannel.Endpoint

TODO

• Need to integrate Javascript SDK with AspNetCore SDK. Waiting for new Javascript SDK to be released with connection string support.