IE test fix: ClientOutOfSync Webdriver tests

These tests are pretty unreliable for IE on our autobuilds but seem to pass
fine locally. I suspect it's because in the slower test environments we're not
waiting long enough for our test page to fully refresh.

@bug W-1849545@
@rev rjayaramappa@
Merging origin/tbliss/master-pending-clientOutOfSync-testfixes into master