fix consul xresolver watch config

[kcajmagic]

closes #136

[codecov]

Codecov Report

Merging #138 into master will not change coverage.
The diff coverage is 0.00%.

@@           Coverage Diff           @@
##           master     #138   +/-   ##
=======================================
  Coverage   58.20%   58.20%           
=======================================
  Files          14       14           
  Lines         981      981           
=======================================
  Hits          571      571           
  Misses        401      401           
  Partials        9        9           

Impacted Files	Coverage Δ
outbounder.go	87.73% <0.00%> (ø)

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