* Fix https://github.com/Microsoft/vscode-mssql/issues/986 and add better server edition naming
- Fixed a number of issues related to the binding queue, specifically the fact that it didn't capture exceptions that occurred on the binding thread. This caused the thread to crash the service.
- The root cause of the error was when you get a connection error during init of the SmoMetadataProvider which threw an exception. Because of this no Binder was created, and the code would null ref later during processing
- Added logic to handle null ref issue and other related code
- Added a unit test for the new error handling path, and supported still returning some value in this case
- Separately, have a fix for an issue where the edition is shown as "SQL Azure" for all Azure connections. Fixing to be "Azure SQL DB" for this case and handle when the database reports as DW or Stretch instead. This maps better to users concept of what the edition should be and avoids returning what is an outdated term.
* Messed up the test - fixing this by returning the expected return object
* Stage changes to other machine
* IntelliSense cache rebuild command
* Move to other machine
* Add a test for overwriting binding queue.
* Move event handler into lanaguageservice.cs
* Remove extra layer of tasks in binding queue
* Change order of assigning result to avoid race condition
* Add timeout log for the metadata lock event
* Fix test cases
* Initial code for binding queue
* Fix-up some of the timeout wait code
* Add some initial test code
* Add missing test file
* Update the binding queue tests
* Add more test coverage and refactor a bit. Disable reliabile connection until we can fix it..it's holding an open data reader connection.
* A few more test updates
* Initial integrate queue with language service.
* Hook up the connected binding queue into al binding calls.
* Cleanup comments and remove dead code
* More missing comments
* Fix build break. Reenable ReliabileConnection.
* Revert all changes to SqlConnectionFactory
* Resolve merge conflicts
* Cleanup some more of the timeouts and sync code
* Address code review feedback
* Address more code review feedback
