Switch from gsdview.appspot.com to commondatastorage.googleapis.com.
Switch from gsdview.appspot.com to commondatastorage.googleapis.com.

This server requires that unsafe characters are quoted in URLs, so we do that
here.

Change-Id: I6b7c430671b02a8da11777029b0fdb59a87dcae1

BUG=chromium-os:9902
TEST=Ran unit tests. Ran example buildbot run and diff'd new version and old
     version of Packages file.

Review URL: http://codereview.chromium.org/5542002

chadversary/chromiumos.chromite,bpsinc-native/src_third_party_chromite,bpsinc-native/src_third_party_chromite,zhang0137/chromite,zhang0137/chromite,bpsinc-native/src_third_party_chromite,coreos/chromite,coreos/chromite,chadversary/chromiumos.chromite,coreos/chromite,zhang0137/chromite