Fix to display the SDP status in E19

[lusassl-msft]

Issue:
Customers reporting that the Serialized Data Protection status is not displayed in Exchange 2019

Reason:
Wrong brackets used in switch statment:

Is:

        switch ($exchangeCU) {
            ( $_ -eq "CU12" ) { $serializedDataSigningSupportedBuild = ($exchangeBuild -ge "15.2.1118.21"); break }
            ( $_ -eq "CU11" ) { $serializedDataSigningSupportedBuild = ($exchangeBuild -ge "15.2.986.37"); break }
            default { $serializedDataSigningSupportedBuild = $false }
        }

Should:

        switch ($exchangeCU) {
            { $_ -eq "CU12" } { $serializedDataSigningSupportedBuild = ($exchangeBuild -ge "15.2.1118.21"); break }
            { $_ -eq "CU11" } { $serializedDataSigningSupportedBuild = ($exchangeBuild -ge "15.2.986.37"); break }
            default { $serializedDataSigningSupportedBuild = $false }
        }

Fix:
Use {} brackets.

Validation:
Lab