Tools.ps1: move all processes into functions and explicitly declare global variables

Test-InternetBandwidth.ps1: output to console instead of file
Uninstall-NCentralComponents.ps1: minor updates

Test-InternetBandwidth.ps1

@@ -31,13 +31,14 @@ Catch { LogErr $_.Exception.Message }
 ## Run the SpeedTest CLI app
 $SPEEDTEST = "${WORKINGDIR}\speedtest.exe"
 If ( Test-Path $SPEEDTEST ) {
-    Try { Start-Process $SPEEDTEST -ArgumentList "--progress=no --selection-details --output-header --format=csv" -PassThru -Wait -RedirectStandardOutput $OUTPUT }
+    #Try { Start-Process $SPEEDTEST -ArgumentList "--progress=no --selection-details --output-header --format=csv" -PassThru -Wait -RedirectStandardOutput $OUTPUT }
+    Try {
+        $RESULTS = (cmd.exe /c "${SPEEDTEST} --progress=no")
+        LogMsg $RESULTS
+    }
     Catch { LogErr $_.Exception.Message }
 } Else { LogMsg "The file does not exist at the expected path: ""${SPEEDTEST}""" }
 
-## Process the results
-
-
 ## Cleanup files and directories created by this script
 If ( Test-Path $ZIPFILE ) {
     LogMsg "Deleting downloaded zip file: ""$ZIPFILE"""