Report Operating System in Google Analytics

LT-14449
Make the usage metrics communicate which OS is being used

--HG--
branch : OSVersionReporting
Report Operating System in Google Analytics

LT-14449
Make the usage metrics communicate which OS is being used

modify variable name from code review

--HG--
branch : OSVersionReporting
Close OSVersionReporting branch

--HG--
branch : OSVersionReporting
extra : close : 1
Merge: OSVersionReporting->FlexBrdigeAlpha

--HG--
branch : FlexBridgeAlpha