Fix command calls/sec grafana dashboard panel hover tooltip

[justabaka]

The hover tooltip is wrong as it sums up every value which it shouldn't be doing if we want to see a real command call counts. The tooltip type should be set to "individual" to fix the value stacking/summing up issue.

Wrong tooltip:

Correct tooltip:

[coveralls]

Coverage remained the same at 81.379% when pulling 56aaf04 on justabaka:master into c3213a1 on oliver006:master.

[codecov]

Codecov Report

Merging #324 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #324   +/-   ##
=======================================
  Coverage   78.14%   78.14%           
=======================================
  Files           2        2           
  Lines         828      828           
=======================================
  Hits          647      647           
  Misses        148      148           
  Partials       33       33

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[oliver006]

Thank for the PR, looks good!