ninjalog: Send AUTONINJA_BUILD_ID as invocation_id in metadata

Bug: 355127782
Change-Id: Iee9cb6228e568cc6d3ec12a7764e04442776af4c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/5740774
Auto-Submit: Junji Watanabe <jwata@google.com>
Reviewed-by: Takuto Ikuta <tikuta@chromium.org>
Commit-Queue: Junji Watanabe <jwata@google.com>

ninjalog_uploader.py

@@ -157,6 +157,10 @@ def GetMetadata(cmdline, ninjalog):
         "targets": GetBuildTargetFromCommandLine(cmdline),
     }
 
+    invocation_id = os.environ.get("AUTONINJA_BUILD_ID")
+    if invocation_id:
+        metadata['invocation_id'] = invocation_id
+
     jflag = GetJflag(cmdline)
     if jflag is not None:
         metadata["jobs"] = jflag