chore(license): add license checker for copyright and fix license files

[empiredan]

#1676

There are several tasks/steps for this PR:

• develop a script to check the consistency between .licenserc.yaml and all files of the project.
• according to the check result, fix .licenserc.yaml.
• according to the fixed .licenserc.yaml, amend LICENSE.

License checker could be run as follows:

$ python3 scripts/check_license.py
No diff found for marker 'Copyright (c) Facebook, Inc' in /Users/danwang/Workdir/prj/ds/pegasus/empiredan-pegasus-new/.licenserc.yaml
Diff found for marker 'https://github.com/preshing/cpp11-on-multicore/blob/master/LICENSE' in /Users/danwang/Workdir/prj/ds/pegasus/empiredan-pegasus-new/.licenserc.yaml:
++: {'src/utils/hpc_locks/autoreseteventcondvar.h', 'src/utils/hpc_locks/readme.txt'}
No diff found for marker 'Copyright (c) 2011 The Chromium Authors' in /Users/danwang/Workdir/prj/ds/pegasus/empiredan-pegasus-new/.licenserc.yaml
No diff found for marker 'Copyright (c) 2012 The Chromium Authors' in /Users/danwang/Workdir/prj/ds/pegasus/empiredan-pegasus-new/.licenserc.yaml
No diff found for marker 'Copyright (c) 2006-2009 The Chromium Authors' in /Users/danwang/Workdir/prj/ds/pegasus/empiredan-pegasus-new/.licenserc.yaml
No diff found for marker 'Copyright 2017 The Abseil Authors' in /Users/danwang/Workdir/prj/ds/pegasus/empiredan-pegasus-new/.licenserc.yaml
No diff found for marker 'Copyright (c) 2010-2011, Rob Jansen' in /Users/danwang/Workdir/prj/ds/pegasus/empiredan-pegasus-new/.licenserc.yaml
No diff found for marker 'Copyright (c) 2017 Guillaume Papin' in /Users/danwang/Workdir/prj/ds/pegasus/empiredan-pegasus-new/.licenserc.yaml
Diff found for marker 'Copyright (c) 2015 Microsoft Corporation' in /Users/danwang/Workdir/prj/ds/pegasus/empiredan-pegasus-new/.licenserc.yaml:
+++++++++: {'src/utils/dlib.h', 'src/runtime/test/command.txt', 'src/replica/replica_test_utils.h', 'docs/rdsn-README.md', 'src/common/serialization_helper/dsn.layer2_types.h', 'src/aio/test/copy_source.txt', 'src/common/api_common.h', 'src/runtime/dsn.layer2_types.cpp', 'src/replica/replica_test_utils.cpp'}
markers in some files of the project not found in /Users/danwang/Workdir/prj/ds/pegasus/empiredan-pegasus-new/.licenserc.yaml:
{'NO_COPYRIGHT_MARKER': {'./.rat-excludes',
                         './DISCLAIMER-WIP',
                         './NOTICE',
                         '.devcontainer/devcontainer.json',
                         '.github/ISSUE_TEMPLATE/bug_report.md',
                         '.github/ISSUE_TEMPLATE/feature-request.md',
                         '.github/ISSUE_TEMPLATE/general_question.md',
                         '.github/pull_request_template.md',
                         'admin-cli/go.sum',
                         'go-client/example/pegasus-client-config.json',
                         'go-client/generator/admin.csv',
                         'go-client/generator/radmin.csv',
                         'go-client/go.sum',
                         'go-client/idl/base/GoUnusedProtection__.go',
                         'go-client/idl/base/dsn_err_string.go',
                         'go-client/idl/base/rocskdb_err_string.go',
                         'nodejs-client/.npmigonre',
                         'nodejs-client/package.json',
                         'pegic/go.sum',
                         'python-client/requirement.txt',
                         'src/aio/test/copy_source.txt',
                         'src/failure_detector/test/gtest.filter',
                         'src/meta/test/meta_state/gtest.filter',
                         'src/meta/test/suite1',
                         'src/meta/test/suite2',
                         'src/nfs/test/nfs_test_file1',
                         'src/nfs/test/nfs_test_file2',
                         'src/replica/duplication/test/log.1.0.all_loaded_are_write_empties',
                         'src/replica/duplication/test/log.1.0.handle_real_private_log',
                         'src/replica/duplication/test/log.1.0.handle_real_private_log2',
                         'src/replica/storage/simple_kv/test/rep_tests.pdf',
                         'src/runtime/test/command.txt',
                         'src/runtime/test/gtest.filter',
                         'src/shell/argh.h',
                         'src/shell/linenoise/linenoise.c',
                         'src/shell/linenoise/linenoise.h',
                         'src/shell/sds/sds.c',
                         'src/shell/sds/sds.h',
                         'src/shell/sds/sdsalloc.h',
                         'src/utils/hpc_locks/autoreseteventcondvar.h',
                         'src/utils/hpc_locks/readme.txt',
                         'src/utils/test/config-empty.ini',
                         'thirdparty/fix_fds_for_macos.patch',
                         'thirdparty/fix_jemalloc_for_m1_on_macos.patch',
                         'thirdparty/fix_libevent_for_macos.patch',
                         'thirdparty/fix_prometheus-cpp_limits.patch',
                         'thirdparty/fix_s2_for_aarch64.patch',
                         'thirdparty/fix_thrift_for_cpp11.patch',
                         'thirdparty/rocksdb_fix_atomic_flush_0879c240.patch'}}

The files marked with No diff found are consistent with .licenserc.yaml. Otherwise, .licenserc.yaml should be fixed accordingly.