log heartbeat if true on config

[henrod]

No description provided.

[coveralls]

Pull Request Test Coverage Report for Build 148

• 5 of 5 (100.0%) changed or added relevant lines in 2 files are covered.
• 2 unchanged lines in 1 file lost coverage.
• Overall coverage increased (+0.3%) to 81.889%

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Files with Coverage Reduction	New Missed Lines	%
agent/agent.go	2	83.74%

Totals
Change from base Build 144:	0.3%
Covered Lines:	3147
Relevant Lines:	3843

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💛 - Coveralls

[felipejfc]

you are missing a default value, I recommend setting default true in config.go

[henrod]

Actually I thought that would be better if the default value was false (that's why I didn't put on config.go). If the heartbeat fails, an error would be logged and we would know.

But I can make the default true, if you prefer.

[felipejfc]

I do, this is useful information and that's what debug log is for...