SqlRS: Add SSL functionality

Details of the scenario you tried and the problem that is occurring:
I suggest add SSL functionality to resource SqlRS.

The suggested change in issue #990 removing SqlRSSecureConnectionLevel and adding SecureConnectionLevel to the SqlRS resource will only change the value of property SecureConnectionLevel, it does not add new ports or bind a certificate to the configuration.

Articles.

How Certificate Bindings Are Stored
Using Secure Web Service Methods
ConfigurationSetting Method - SetSecureConnectionLevel
RsReportServer.config Configuration File

The DSC configuration that is using the resource (as detailed as possible):
n/a

Version of the Operating System, SQL Server and PowerShell the DSC Target Node is running:
n/a

What module (SqlServer or SQLPS) and which version of the module the DSC Target Node is running:
n/a

Version of the DSC module you're using, or 'dev' if you're using current dev branch:
Dev

Start by locating the SqlRS resource and reviewing how it currently handles SecureConnectionLevel. Read the linked Microsoft documentation on certificate bindings, secure web service methods, and SetSecureConnectionLevel. Done means the resource can configure the required SSL ports and bind a certificate, with tests covering that configuration.