Prometheus 2.0 does not like non-string label values

[omadawn]

Prometheus version 2 does not like non-string label values. The following output
ssh_exporter_test_simple_exit_status{name="test_simple",host="localhost",user="vagrant",script="echo output script",exit_status=0} 0

Note the lack of quotes around exit_status. This causes Prometheus to throw an error when trying to parse the page. "No token found" will be seen in the prometheus logs and the results are not stored in the TSDB.

Updated the output to quote the results.

ssh_exporter_test_simple_exit_status{name="test_simple",host="localhost",user="vagrant",script="echo output script",exit_status="0"} 0