Use the KERNEL_TREE Jenkins parameter for bisections
Use the KERNEL_TREE Jenkins parameter for bisections

The Jenkins bisection paramters have now been documented and fixed,
the "TREE" parameter has been renamed "KERNEL_TREE" so reflect that in
the request when triggering jobs.

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

kernelci/kernelci-backend,kernelci/kernelci-backend