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Prediction: use acceleration from RNN model and add a gflag in conf file for tim thred to prediction trajectories

* change to use synchronize update vehicle state in pnc_map

* but print an error message for every 10 seconds, incase the user
really forget to provide prediction message

* script: record meta info into all bags.

* planning: add a gflag to protect nudge slowdown behavior.

* use the earliest time when user presses 'd'
* timestamp returned by rospy.Time.now() seems incorrect.

Localization: Add /apollo/localization/msf_gnss and /apollo/localization/msf_lidar topics in scripts/record_bag.sh. (#1929)

* planning: reduce traffic light stop distance to 0.2 m

* planning: reduce minimum follow distance to 2m

* tools: set the default

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