update the testing example in README.md

[bhcleek]

Fix the testing example in README.md so that it works as described to
show an event given that config/kernel-monitor-filelog.json expects a
string wrapped with square brackets to come right after kernel: .

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[APPROVALNOTIFIER] This PR is NOT APPROVED

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[bhcleek]

/assign @dchen1107

[andyxning]

/ok-to-test

[andyxning]

@bhcleek

You just add a timestamp 2019-11-13T19:28:16.288365+00:00 before kernel: , right? The config files are just examples, you need to adjust the rule patterns according to your /dev/kmsg log format since different Linux distributions have different formats. Even with the same Linux distribution, people can adjust the log format.

What we should do maybe add a statement like: The config files are just examples, you need to adjust the rule patterns according to your log records.

[bhcleek]

You're right as far as an accurate description of my changes go. Apparently I missed an important bit here: it was actually described in the commit message, but I failed to include the critical change. I've added amended the commit to correct that. The example now matches the message format specified in config/kernel-monitor-filelog.json

[xueweiz]

Sorry, the test failure is a flake, tracked in #403
/retest

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[bhcleek]

/reopen

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@bhcleek: Reopened this PR.

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/reopen

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