Add ids to flatbuffer fields in y2012, y2016, frc971, and aos

Change-Id: I9ed9006ce6224e2df0459df47771786b928164a1
diff --git a/frc971/wpilib/logging.fbs b/frc971/wpilib/logging.fbs
index fcb4235..d76412f 100644
--- a/frc971/wpilib/logging.fbs
+++ b/frc971/wpilib/logging.fbs
@@ -2,8 +2,8 @@
 
 // Information about the current state of the pneumatics system to log.
 table PneumaticsToLog {
-  compressor_on:bool;
-  read_solenoids:ubyte;
+  compressor_on:bool (id: 0);
+  read_solenoids:ubyte (id: 1);
 }
 
 root_type PneumaticsToLog;