RNET-1168: Make mongodb connection string used for tests configurable #2066

Job	Run time
Deploy BaaS (code-coverage)	2m 1s
Test Source Generation	6m 51s
Verify TODOs	4s
Test Weaver (windows-latest, win-x64)	8m 11s
Test Weaver (ubuntu-latest, linux-x64)	3m 9s
Test Weaver (macos-14, osx-arm64)	3m 46s
Wrappers / Check Cache (ubuntu)	1m 24s
Wrappers / Check Cache (windows)	1m 18s
Wrappers / MacOS	0s
Wrappers / Apple Platform	0s
Wrappers / Catalyst	0s
Wrappers / Android	0s
Wrappers / Linux	0s
Wrappers / UWP	0s
Wrappers / Windows	0s
Package NuGet	10m 5s
Test Code Coverage	1m 8s
Cleanup BaaS	0s
Package Unity	1s
Test .NET Framework	1s
Test Xamarin.macOS	1s
Test UWP	1s
Test ${{ matrix.framework }}, ${{ (((matrix.os.runner == 'win81') && 'win81') \|\| matrix.os.runtime) }}	1s
Test Maui.iOS	1s
Test Xamarin.iOS	1s
Test Maui.MacCatalyst	1s
Test Maui.Android	1s
Test Xamarin.Android	1s
Test Xamarin.tvOS	1s
Test Woven Classes	1s
Verify Namespaces	1s
Build Unity linux	1s
Build Unity windows	1s
Test Unity linux	1s
Test Unity windows	1s
	38m 14s

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