Fix: add listen routerChain when NewBaseDirectory

[cjphaha]

What this PR does:

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

when run NewBaseDirectory() start a new goroutine to run RouterChain Loop

[codecov-commenter]

Codecov Report

Merging #1250 (13b4fd7) into 1.5 (a10ff4d) will decrease coverage by 7.62%.
The diff coverage is 60.41%.

@@            Coverage Diff             @@
##              1.5    #1250      +/-   ##
==========================================
- Coverage   66.13%   58.50%   -7.63%     
==========================================
  Files         174      272      +98     
  Lines        9343    13251    +3908     
==========================================
+ Hits         6179     7753    +1574     
- Misses       2541     4536    +1995     
- Partials      623      962     +339     

Impacted Files	Coverage Δ
cluster/cluster_impl/available_cluster_invoker.go	66.66% <ø> (-6.67%)	⬇️
cluster/cluster_impl/broadcast_cluster_invoker.go	76.47% <ø> (-3.53%)	⬇️
cluster/cluster_impl/failfast_cluster_invoker.go	66.66% <ø> (-4.77%)	⬇️
cluster/cluster_impl/mock_cluster.go	0.00% <0.00%> (ø)
cluster/loadbalance/random.go	100.00% <ø> (ø)
cluster/router/healthcheck/factory.go	66.66% <0.00%> (ø)
common/extension/auth.go	0.00% <ø> (ø)
common/extension/cluster.go	0.00% <ø> (ø)
common/extension/cluster_interceptor.go	0.00% <0.00%> (ø)
common/extension/config_center.go	0.00% <ø> (ø)
... and 386 more

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[zhaoyunxing92]

approved these changes