Internet Explorer (8, 9, 11) jobs for MultimediaViewer

Create jobs:

browsertests-MultimediaViewer-en.wikipedia.beta.wmflabs.org-windows_7-internet_explorer-8-sauce
browsertests-MultimediaViewer-en.wikipedia.beta.wmflabs.org-windows_7-internet_explorer-9-sauce
browsertests-MultimediaViewer-en.wikipedia.beta.wmflabs.org-windows_8.1-internet_explorer-11-sauce

Paired with: Chris McMahon
Bug: 70744
Change-Id: I561f3a7bccd5a60941cbfa76a4c12bd87bbb8615