Enable head-based sampling and add some scripts for large scale deployment

This PR is related to the following issues:

• Head based sampling: https://gitlab.mpi-sws.org/cld/tracing/hindsight-grpc/-/issues/17
• Data type of duration: https://gitlab.mpi-sws.org/cld/tracing/hindsight-grpc/-/issues/20
• Docker images and scripts for deployment: https://gitlab.mpi-sws.org/cld/tracing/hindsight-grpc/-/issues/15

Side note, gen_address.py and config/alibaba_parse.py are not used, will be discarded later.

gen_address.py

@@ -3,7 +3,7 @@ import os
 import shutil
 import argparse
 
-parser = argparse.ArgumentParser(description='Generate hindsight config files')
+parser = argparse.ArgumentParser(description='Generate hindsight config files and addresses file')
 parser.add_argument('-o', "--output", metavar="STR", type=str, default="./hindsight_conf/", help='Output Dir')
 parser.add_argument('-s', "--buffer_size", metavar="NUM", type=str, default="4096", help='Buffer size')
 parser.add_argument('-c', "--buffer_count", metavar="NUM", type=str, default="25000", help='Buffer Count')