Add remote_boot_uuid to Context

This lets us track which boot a message came from and finally fix the
logger relying on ServerStatistics having all the required information
needed to build up the logfile header.

Change-Id: I17fc4c5718d5d69c7a1e154afdd83b1ccb388a8f
diff --git a/aos/BUILD b/aos/BUILD
index 535c0b2..0159623 100644
--- a/aos/BUILD
+++ b/aos/BUILD
@@ -603,6 +603,7 @@
     target_compatible_with = ["@platforms//os:linux"],
     visibility = ["//visibility:public"],
     deps = [
+        "@com_github_gflags_gflags//:gflags",
         "@com_github_google_flatbuffers//:flatbuffers",
         "@com_github_google_glog//:glog",
         "@com_google_absl//absl/types:span",