get_version: revise GetFirmwareVersions regular expression

The number of space characters in version line from
chromeos-firmwareupdate might be zero, so change '\s+' to '\s*'.

BUG=none
TEST=manually

Change-Id: I55e3272bda18e4c6de5451c1f0710e06302a6c70
Reviewed-on: https://chromium-review.googlesource.com/453583
Commit-Ready: Youcheng Syu <youcheng@chromium.org>
Tested-by: Youcheng Syu <youcheng@chromium.org>
Reviewed-by: Ting Shen <phoenixshen@chromium.org>
(cherry picked from commit 9f27c1c98edb3efa83a19e5dd2cddc473e005dbd)
Reviewed-on: https://chromium-review.googlesource.com/737612
Reviewed-by: Kitty Liu <kitty.liu@intel.corp-partner.google.com>
Reviewed-by: Youcheng Syu <youcheng@chromium.org>
Commit-Queue: Youcheng Syu <youcheng@chromium.org>
Trybot-Ready: Youcheng Syu <youcheng@chromium.org>
1 file changed