bitbake: toaster: update build stats reading

In the processes of removing local system accesses
from toaster UI, we remove the build stats
code that was moved to toaster.bbclass, and
adapt the database writing code to read the data
from BuildStatsList event sent by the toaster.bbclass

    [YOCTO #5604]

(Bitbake rev: 4930ff5b471761c2a8d16c1935cdab9cf141d2d8)

Signed-off-by: Alexandru DAMIAN <alexandru.damian@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/bb/ui/toasterui.py

@@ -238,6 +238,8 @@ def main(server, eventHandler, params ):
                     buildinfohelper.store_build_package_information(event)
                 if event.type == "LayerInfo":
                     buildinfohelper.store_layer_info(event)
+                if event.type == "BuildStatsList":
+                    buildinfohelper.store_tasks_stats(event)
                 continue
 
             # ignore