Update pilot.go

[oldthreefeng]

fix to LABEL_SERVICE_LOGS_CUSTOME_CONFIG_TEMPL, when for range an label, will never get the ENV_SERVICE_LOGS_CUSTOME_CONFIG_TEMPL

[codecov-commenter]

Codecov Report

Merging #332 (874dc4b) into master (c7a9b22) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master     #332   +/-   ##
=======================================
  Coverage   20.35%   20.35%           
=======================================
  Files           7        7           
  Lines         678      678           
=======================================
  Hits          138      138           
  Misses        510      510           
  Partials       30       30           

Impacted Files	Coverage Δ
pilot/pilot.go	24.88% <100.00%> (ø)

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