updateDBInfo.trigger() should trigger a new round of DbInfo update

[halfprice]

This is an issue found in simulation that when the cluster controller cannot communicate with a registered worker, the CC will be blocked in broadcastDBInfoRequest indefinitely. When a new worker joins the cluster, although updateDBInfo.trigger() is called, it won't trigger a new serverDbInfo updater.

This PR fixes this issue by starting a new round of DbInfo updater in the middle of broadcastDBInfoRequest.

20230322-045023-zhewu_dbinfo-fd9717d34cd8da39

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Please check each of the following things and check all boxes before accepting a PR.

• The PR has a description, explaining both the problem and the solution.
• The description mentions which forms of testing were done and the testing seems reasonable.
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If this PR is made against a release-branch, please also check the following:

• This change/bugfix is a cherry-pick from the next younger branch (younger release-branch or main if this is the youngest branch)
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[foundationdb-ci]

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

• Commit ID: 90bdfbd
• Duration 0:20:51
• 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)

[fdb-windows-ci]

Doxense CI Report for Windows 10

• Commit ID: 90bdfbd
• Result: ❌ FAILED
• Build Logs (available for 30 days)

[foundationdb-ci]

Result of foundationdb-pr-clang on Linux CentOS 7

• Commit ID: 90bdfbd
• Duration 0:37:05
• 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: 90bdfbd
• Duration 0:48:07
• 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: 90bdfbd
• Duration 1:23:51
• 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)

[jzhou77]

We need to cherrypick this to release 7.1 and 7.2 branches as well @halfprice