Move to .net core - Step 1

[alexandre-lecoq]

Target : .NET Core + Platform Extensions

To do :

• Remove NetworkLibrary = "dbmssocn", in var connectionStringBuilder = new SqlConnectionStringBuilder in QueryMultiDb and DbTargets
• Remove Authentication = SqlAuthenticationMethod.NotSpecified in var connectionStringBuilder = new SqlConnectionStringBuilder in QueryMultiDb and DbTargets

[alexandre-lecoq]

Already done in DataReader.cs, not done in DbTargets.