Consider linking connection resiliency topics with SQL Server/SQL Azure DB docs

[divega]

Currently the topics https://docs.microsoft.com/en-us/ef/core/miscellaneous/connection-resiliency and https://docs.microsoft.com/en-us/azure/sql-database/sql-database-connectivity-issues are completely disconnected, however customers need to often interact with settings on both layers of the stack.

Having these topics link to each other would be useful to those customers.

There is also probably some more detailed guidance we need to figure out, i.e. if there are settings that should not be used together.

Notice that the latter is maintained at https://github.com/Microsoft/azure-docs/blob/master/articles/sql-database/sql-database-connectivity-issues.md and we could send a PR.

cc @AndriySvyryd @ajcvickers @ErikEJ

[ErikEJ]

More info about SqlClient Connection Resiliency in .NET 4.6.1 (and .NET Core) here: https://blogs.msdn.microsoft.com/dotnet/2015/11/30/net-framework-4-6-1-is-now-available/ (not a lot, though)