Paramter as_sysadmin_accounts does not behave in the same way as sql_sysadmin_accounts

Describe the Bug

When passing an array or strings to as_sysadmin_accounts the output escapes each string that has been wrapped with quotes.

Expected Behavior

It should work in the same way as sql_sysadmin_accounts. Not escaping quotes when creating the setup.exe command line.

Steps to Reproduce

Steps to reproduce the behavior:
Pass an array of strings into the as_sysadmin_accounts parameter of the sql_instance resource, run puppet

Additional Context

I think the following commit was only applied to the sql_sysadmin_accounts parameters fd3e772 it should also be applied to as_sysadmin_accounts

[jst-cyr]

The user who has reported this issue seems to have been deleted, but it seems like a very targeted bugfix. I have created PR #515 to suggest a possible solution.