Bug 1592401 - Prevent verbose output when unpacking browsertime. r=perftest-reviewers,rwood

This patch changes the browsertime archive built as a toolchain from a .zip archive to a .tar.bz2 archive to prevent the large amount of verbose unpacking output we currently see.

Differential Revision: https://phabricator.services.mozilla.com/D50995

--HG--
extra : moz-landing-system : lando

taskcluster/ci/toolchain/misc.yml

@@ -153,7 +153,7 @@ browsertime:
         resources:
             - 'tools/browsertime/package.json'
             - 'tools/browsertime/mach_commands.py'
-        toolchain-artifact: public/build/browsertime.zip
+        toolchain-artifact: public/build/browsertime.tar.bz2
     fetches:
         toolchain:
             - linux64-node

taskcluster/scripts/misc/browsertime.sh

@@ -13,8 +13,7 @@ export PATH=$PATH:$MOZ_FETCHES_DIR/node/bin
 ./mach browsertime --setup
 
 # We have tools/browsertime/{package.json,node_modules,...} and want
-# browsertime/{package.json,node_modules}.  ZIP because generic-worker
-# doesn't support .tar.xz.
+# browsertime/{package.json,node_modules}.
 mkdir -p  /builds/worker/artifacts
 cd tools
-zip -r /builds/worker/artifacts/browsertime.zip browsertime
+tar cjf /builds/worker/artifacts/browsertime.tar.bz2 browsertime