fix(conn): allow to exit wait

[ngjaying]

When rule close, need to exit wait

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 78.00000% with 22 lines in your changes missing coverage. Please review.

Project coverage is 71.10%. Comparing base (52e5521) to head (5701fe7). Report is 6 commits behind head on master.

Files with missing lines	Patch %	Lines
internal/io/neuron/sink.go	70.00%	2 Missing and 1 partial :warning:
internal/io/neuron/source.go	62.50%	2 Missing and 1 partial :warning:
extensions/impl/sql/lookupSource.go	60.00%	1 Missing and 1 partial :warning:
extensions/impl/sql/sink.go	60.00%	1 Missing and 1 partial :warning:
extensions/impl/sql/source.go	60.00%	1 Missing and 1 partial :warning:
internal/io/edgex/sink.go	66.67%	1 Missing and 1 partial :warning:
internal/io/edgex/source.go	60.00%	1 Missing and 1 partial :warning:
internal/io/http/httppush_source.go	33.33%	1 Missing and 1 partial :warning:
internal/io/websocket/websocket_sink.go	33.33%	1 Missing and 1 partial :warning:
internal/io/websocket/websocket_source.go	33.33%	1 Missing and 1 partial :warning:

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3307      +/-   ##
==========================================
+ Coverage   71.05%   71.10%   +0.05%     
==========================================
  Files         400      400              
  Lines       45167    45180      +13     
==========================================
+ Hits        32091    32122      +31     
+ Misses      10555    10538      -17     
+ Partials     2521     2520       -1     

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