Activity Tags aren't set when connect timeout exception occurs

[bgrainger]

If a timeout occurs when connecting to a host, the net.peer.name and db.name Activity tags are not set. This would be useful information to have included on the failed Activity.

MySqlConnector.MySqlException:
   at MySqlConnector.MySqlConnection+<CreateSessionAsync>d__124.MoveNext (MySqlConnector, Version=2.0.0.0, Culture=neutral, PublicKeyToken=d33d3e53aa5f8c92: /_/src/MySqlConnector/MySqlConnection.cs:931)
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089)
   at MySqlConnector.MySqlConnection+<OpenAsync>d__26.MoveNext (MySqlConnector, Version=2.0.0.0, Culture=neutral, PublicKeyToken=d33d3e53aa5f8c92: /_/src/MySqlConnector/MySqlConnection.cs:434)
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089)
   at MySqlConnector.MySqlConnection.Open (MySqlConnector, Version=2.0.0.0, Culture=neutral, PublicKeyToken=d33d3e53aa5f8c92: /_/src/MySqlConnector/MySqlConnection.cs:369)

Inner exception MySqlConnector.MySqlException handled at MySqlConnector.MySqlConnection+<CreateSessionAsync>d__124.MoveNext:
   at MySqlConnector.Core.ServerSession+<ConnectAsync>d__83.MoveNext (MySqlConnector, Version=2.0.0.0, Culture=neutral, PublicKeyToken=d33d3e53aa5f8c92: /_/src/MySqlConnector/Core/ServerSession.cs:510)
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089)
   at MySqlConnector.Core.ConnectionPool+<ConnectSessionAsync>d__21.MoveNext (MySqlConnector, Version=2.0.0.0, Culture=neutral, PublicKeyToken=d33d3e53aa5f8c92: /_/src/MySqlConnector/Core/ConnectionPool.cs:363)
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089)
   at MySqlConnector.Core.ConnectionPool+<GetSessionAsync>d__10.MoveNext (MySqlConnector, Version=2.0.0.0, Culture=neutral, PublicKeyToken=d33d3e53aa5f8c92: /_/src/MySqlConnector/Core/ConnectionPool.cs:94)
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089)
   at MySqlConnector.Core.ConnectionPool+<GetSessionAsync>d__10.MoveNext (MySqlConnector, Version=2.0.0.0, Culture=neutral, PublicKeyToken=d33d3e53aa5f8c92: /_/src/MySqlConnector/Core/ConnectionPool.cs:124)
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089)
   at MySqlConnector.MySqlConnection+<CreateSessionAsync>d__124.MoveNext (MySqlConnector, Version=2.0.0.0, Culture=neutral, PublicKeyToken=d33d3e53aa5f8c92: /_/src/MySqlConnector/MySqlConnection.cs:909)