sync cluster info to nodes concurrently

[greatsharp]

if a node syncs failed, all nodes behind it won't be synced
to avoid it, sync cluster info to nodes in goroutines

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 80.00000% with 3 lines in your changes missing coverage. Please review.

Project coverage is 46.99%. Comparing base (6c56470) to head (4599b12).
Report is 69 commits behind head on unstable.

Files with missing lines	Patch %	Lines
controller/cluster.go	78.57%	1 Missing and 2 partials ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##           unstable     #320      +/-   ##
============================================
+ Coverage     43.38%   46.99%   +3.60%     
============================================
  Files            37       45       +8     
  Lines          2971     4403    +1432     
============================================
+ Hits           1289     2069     +780     
- Misses         1544     2127     +583     
- Partials        138      207      +69     

Flag	Coverage Δ
unittests	46.99% <80.00%> (+3.60%)	⬆️

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