bisect-kit: integrate quick-provision

If you need to specify ssh keys of devserver for running
quick-provision, the keys could be stored in the
./cros_template_files/at_home/.ssh directory and bisect-kit will copy
them into chroot.

BUG=b:170635511
TEST=manually test some of following combinations
TEST=  {switch_cros_prebuilt.py, switch_cros_localbuild.py, switch_cros_localbuild_buildbucket.py}
TEST=  {quick-provision, old cros flash, new cros flash}
TEST=  {DUT in the lab, local DUT in corp network, local DUT in public network}
TEST=  {developer workstation, bisector runner}

Change-Id: Ic2fdea88bd62b7dca2a59b27aada518f1b2cdc70
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/bisect-kit/+/2718213
Commit-Queue: Kuang-che Wu <kcwu@chromium.org>
Tested-by: Kuang-che Wu <kcwu@chromium.org>
Reviewed-by: Zheng-Jie Chang <zjchang@chromium.org>
6 files changed