Custom quotedIdentifier and concatNullYields connection property

[lilgreenbird]

for review only, not to be merged

[David-Engel]

One goal is to see how our tests behave with the options set to their non-default values. I assume everything will pass. The only small risk area in my mind is the metadata queries so ensuring those run with the non-default values is more important to me. You can simply change the default values or the properties in the PR to make testing easier.