This CL updates gclient sync to use the protocol of the URL specified in the solutions for cloning all the child dependencies of it.

Bug: chrome-operations:170
Change-Id: I33588059788b677fbae8c3b434100af5c7979a67
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/3631600Reviewed-by: Joanna Wang <jojwang@chromium.org>
Reviewed-by: Josip Sokcevic <sokcevic@google.com>
Commit-Queue: Aravind Vasudevan <aravindvasudev@google.com>