Update grafana template.

[little-cui]

No description provided.

[coveralls]

Coverage increased (+0.1%) to 71.674% when pulling f0c87be on little-cui:master into 3883418 on ServiceComb:master.

[codecov-io]

Codecov Report

Merging #218 into master will increase coverage by 0.02%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #218      +/-   ##
==========================================
+ Coverage   67.96%   67.99%   +0.02%     
==========================================
  Files          17       17              
  Lines        3584     3584              
==========================================
+ Hits         2436     2437       +1     
  Misses        974      974              
+ Partials      174      173       -1

Impacted Files	Coverage Δ
server/service/tag.go	74.41% <0%> (+0.58%)	⬆️

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