Update Ruby on Win10

QtWebKit requires newer Ruby than version installed on Windows 10 builders.

Task-number: QTQAINFRA-997
Change-Id: Id4f917a824daaab4aeb1445a3a16906663208b6d
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>

coin/provisioning/common/helpers.ps1

@@ -29,3 +29,23 @@ function Extract-Zip
     $destinationFolder = $shell.Namespace($Destination)
     $destinationFolder.CopyHere($zipfile.Items(), 16)
 }
+
+function BadParam
+{
+    Param ([string]$Description)
+    throw("You must specify $Description")
+}
+
+function Download
+{
+    Param (
+        [string] $OfficialUrl = $(BadParam("the official download URL")),
+        [string] $CachedUrl   = $(BadParam("the locally cached URL")),
+        [string] $Destination = $(BadParam("a download target location"))
+    )
+    try {
+        Invoke-WebRequest -UseBasicParsing $CachedUrl -OutFile $Destination
+    } catch {
+        Invoke-WebRequest -UseBasicParsing $OfficialUrl -OutFile $Destination
+    }
+}

coin/provisioning/common/ruby.ps1

@@ -0,0 +1,7 @@
+. "$PSScriptRoot\helpers.ps1"
+
+$installer = "c:\users\qt\downloads\rubyinstaller-2.3.1.exe"
+
+Download https://dl.bintray.com/oneclick/rubyinstaller/rubyinstaller-2.3.1.exe http://ci-files01-hki.ci.local/input/ruby/rubyinstaller-2.3.1.exe $installer
+Verify-Checksum $installer "FF377F6F313849C3B0CD72EEC1EFFA436F0E4A36"
+& $installer /DIR=C:\ruby /VERYSILENT

coin/provisioning/qtci-windows-10-x86/ruby.ps1

@@ -0,0 +1 @@
+. "$PSScriptRoot\..\common\ruby.ps1"

coin/provisioning/qtci-windows-10-x86_64/ruby.ps1

@@ -0,0 +1 @@
+. "$PSScriptRoot\..\common\ruby.ps1"