add support for condition on bool type

[TomonoriSoejima]

Currently

Doc does not support bool type.

With the equals condition, you can compare if a field has a certain value. The condition accepts only an integer or a string value.

When I did so, I got this warning packetbeat.

2017/11/21 01:10:50.019224 condition.go:235: WARN unexpected type bool in equals condition as it accepts only integers and strings. 

[ewgRa]

This problem looks like duplicate of #4637, probably one of them can be closed in favor of another.

Merged PR #5954 looks like solution for both issues.

[ruflin]

Closing this as #5954 was merged.

@ewgRa Thanks for the ping.

[botelastic]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[botelastic]

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