add lava-v2-get-boot-results.py
add lava-v2-get-boot-results.py

Add lava-v2-get-boot-results.py to go through each submitted LAVA v2
job and fetch the corresponding boot results from the KernelCI
backend.  Save the result in a JSON file so it can be used later, for
example to trigger bisections.

Note: This is effectively polling the kernelci backend API to look for
      boot results.  A better approach would be to have a callback
      from the kernelci backend when some boot data has been received.
      This first implementation is to make it possible to run
      bisections at all.

Signed-off-by: Guillaume Tucker <e7e20b7c30f19d4ca6b81319ef81bf200369d137@collabora.com>

kernelci/lava-ci-staging,kernelci/lava-ci-staging,kernelci/lava-ci-staging