The tracing tests in `ConformanceTests` for some components are run with
`RemoteExecutor.Invoke(() => RunWithFixtureAsync(obj => obj.ActivitySourceTest(key: null))).Dispose()`
.. where `RunWithFixtureAsync` starts up a `testcontainer` in the remote
process, and then runs the test. But unlike other instances of the
tracing tests, here starting up the container can take ~1min causing the `RemoteExecutor`
to fail after the default 1 min timeout.
Instead pass the connection string from the fixture to the
`RemoteExecutor`, so a new container doesn't need to be spun up.
Example log from the remote execution:
```
[testcontainers.org 00:00:02.97] Execute "/opt/mssql-tools/bin/sqlcmd -Q SELECT 1;" at Docker container d69a9831c425
[testcontainers.org 00:00:12.09] Execute "/opt/mssql-tools/bin/sqlcmd -Q SELECT 1;" at Docker container d69a9831c425
[testcontainers.org 00:00:21.15] Execute "/opt/mssql-tools/bin/sqlcmd -Q SELECT 1;" at Docker container d69a9831c425
[testcontainers.org 00:00:30.22] Execute "/opt/mssql-tools/bin/sqlcmd -Q SELECT 1;" at Docker container d69a9831c425
[testcontainers.org 00:00:39.29] Execute "/opt/mssql-tools/bin/sqlcmd -Q SELECT 1;" at Docker container d69a9831c425
[testcontainers.org 00:00:48.35] Execute "/opt/mssql-tools/bin/sqlcmd -Q SELECT 1;" at Docker container d69a9831c425
[testcontainers.org 00:00:57.42] Execute "/opt/mssql-tools/bin/sqlcmd -Q SELECT 1;" at Docker container d69a9831c425
[testcontainers.org 00:00:58.52] Execute "/opt/mssql-tools/bin/sqlcmd -Q SELECT 1;" at Docker container d69a9831c425
[testcontainers.org 00:00:59.60] Execute "/opt/mssql-tools/bin/sqlcmd -Q SELECT 1;" at Docker container d69a9831c425
[xUnit.net 00:02:38.60] Aspire.Microsoft.EntityFrameworkCore.SqlServer.Tests.ConformanceTests_TypeSpecificConfig.TracingEnablesTheRightActivitySource [FAIL]
[xUnit.net 00:02:38.60] Microsoft.DotNet.RemoteExecutor.RemoteExecutionException : Half-way through waiting for remote process.
[xUnit.net 00:02:38.60] Timed out at 3/27/2024 5:35:56 PM after 60000ms waiting for remote process.
[xUnit.net 00:02:38.60] Process ID: 36471
[xUnit.net 00:02:38.60] Handle: 5036
[xUnit.net 00:02:38.60] Name: dotnet
[xUnit.net 00:02:38.60] MainModule: /datadisks/disk1/work/B5B5097E/p/dotnet-cli/dotnet
[xUnit.net 00:02:38.60] StartTime: 3/27/2024 5:34:56 PM
[xUnit.net 00:02:38.60] TotalProcessorTime: 00:00:02.1500000
[xUnit.net 00:02:38.60]
[xUnit.net 00:02:38.60] Stack Trace:
[xUnit.net 00:02:38.60] /_/src/Microsoft.DotNet.RemoteExecutor/src/RemoteInvokeHandle.cs(225,0): at Microsoft.DotNet.RemoteExecutor.RemoteInvokeHandle.Dispose(Boolean disposing)
[xUnit.net 00:02:38.60] /_/src/Microsoft.DotNet.RemoteExecutor/src/RemoteInvokeHandle.cs(55,0): at Microsoft.DotNet.RemoteExecutor.RemoteInvokeHandle.Dispose()
[xUnit.net 00:02:38.60] /_/tests/Aspire.Microsoft.EntityFrameworkCore.SqlServer.Tests/ConformanceTests.cs(116,0): at Aspire.Microsoft.EntityFrameworkCore.SqlServer.Tests.ConformanceTests.TracingEnabl>
[xUnit.net 00:02:38.60] at System.RuntimeMethodHandle.InvokeMethod(Object target, Void** arguments, Signature sig, Boolean isConstructor)
[xUnit.net 00:02:38.60] at System.Reflection.MethodBaseInvoker.InvokeWithNoArgs(Object obj, BindingFlags invokeAttr)
```
Fixes #3221