tree 91c97b4b290d7be756ec85358159ae08ee8f2fe8
parent ba0aac19c0ca1de8b94d95303b0d84a6b69f5aa4
author James Robinson <jamesr@google.com> 1542393711 -0800
committer CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org> 1542397839 +0000

[set] Support specifying --packages with no --product in set

This reinstates support for saying:

fx set x64 --packages ...

with no product specified by making the available/preinstall/monolith
assignments check if the variables are already defined before appending
to them.

BLD-240 #comment restore 'fx set x64 --packages ..' with no product

Change-Id: I9822280763e66ea1b1fb2a9b23f22a3e979a7468