Audit storage statistic

[kakaiu]

This PR introduces AuditStorageStatistic trace event to:
(1) Understand the progress of audit storage;
(2) Understand the fragment of serverKeys introduced by encode_shard_location_metadata.

100K correctness test with 2 irrelevant failures
20230504-223330-zhewang-b9c720dd6272566a compressed=True data_size=33126674 duration=6473460 ended=100000 fail=2 fail_fast=10 max_runs=100000 pass=99998 priority=100 remaining=0 runtime=1:12:45 sanity=False started=100000 stopped=20230504-234615 submitted=20230504-223330 timeout=5400 username=zhewang

100K ValidateStorage test
20230504-223406-zhewang-eaa2bcbcd54aaef1 compressed=True data_size=33155985 duration=3378096 ended=100000 fail_fast=10 max_runs=100000 pass=100000 priority=100 remaining=0 runtime=0:52:40 sanity=False started=100000 stopped=20230504-232646 submitted=20230504-223406 timeout=5400 username=zhewang

This PR is based on #9628

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[foundationdb-ci]

Result of foundationdb-pr-clang-ide on Linux CentOS 7

• Commit ID: 12f93c5
• Duration 0:20:00
• Result: ✅ SUCCEEDED
• Error: N/A
• Build Log terminal output (available for 30 days)
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[fdb-windows-ci]

Doxense CI Report for Windows 10

• Commit ID: 12f93c5
• Result: ❌ FAILED
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[foundationdb-ci]

Result of foundationdb-pr-clang on Linux CentOS 7

• Commit ID: 12f93c5
• Duration 0:44:53
• Result: ✅ SUCCEEDED
• Error: N/A
• Build Log terminal output (available for 30 days)
• Build Workspace zip file of the working directory (available for 30 days)

[foundationdb-ci]

Result of foundationdb-pr on Linux CentOS 7

• Commit ID: 12f93c5
• Duration 1:20:42
• Result: ✅ SUCCEEDED
• Error: N/A
• Build Log terminal output (available for 30 days)
• Build Workspace zip file of the working directory (available for 30 days)

[foundationdb-ci]

Result of foundationdb-pr-cluster-tests on Linux CentOS 7

• Commit ID: 12f93c5
• Duration 1:27:53
• Result: ✅ SUCCEEDED
• Error: N/A
• Build Log terminal output (available for 30 days)
• Build Workspace zip file of the working directory (available for 30 days)
• Cluster Test Logs zip file of the test logs (available for 30 days)