Updating support for Launch with the script launchbugs.html

Added support for EngProd Bit Approvers
Added support for multiple tes and approvers comma separated
Added support for searches without milestone
Added js/getParameters.js for functions that are shared

BUG=None
TEST=go/launchbugs?
- go/launchbugs?te=new
- go/launchbugs?m=105
- go/launchbugs?te=awendy
- go/launchbugs?m=105&te=dhaddock
- go/launchbugs?team=corex
- go/launchbugs?m=108&te=awendy,dhaddock&a=abodeti

Change-Id: I77e36c967edaec0e833ce4c1fbb9c847f66c5130
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crostestutils/+/3988744
Reviewed-by: Hyung Tae Kim <hyungtaekim@chromium.org>
Commit-Queue: Wendy Aleman Martinez <awendy@chromium.org>
Reviewed-by: David Haddock <dhaddock@chromium.org>
Tested-by: Wendy Aleman Martinez <awendy@chromium.org>
4 files changed