fix bugs below

[LanternLee]

1. fix metaserver long fgc for soft ref
2. check activeDc before markup/markdown
3. do not sub sentinel hellos from slaves cross region
4. clear jvm logs every starting
5. metric unhealthy bi-direction repl

[codecov]

Codecov Report

Attention: 40 lines in your changes are missing coverage. Please review.

Comparison is base (b903aab) 53.62% compared to head (3af08be) 53.65%.
Report is 1 commits behind head on master.

Files	Patch %	Lines
...com/ctrip/xpipe/endpoint/ClusterShardHostPort.java	38.88%	7 Missing and 4 partials ⚠️
...eck/actions/sentinel/SentinelHelloCheckAction.java	73.52%	7 Missing and 2 partials ⚠️
...lthcheck/actions/sentinel/NoRedisToSubContext.java	0.00%	7 Missing ⚠️
...ector/aggregator/AbstractAggregationCollector.java	50.00%	3 Missing and 1 partial ⚠️
...gator/OneWaySentinelCheckAggregationCollector.java	73.33%	0 Missing and 4 partials ⚠️
...controller/OneWaySentinelHelloCheckController.java	66.66%	2 Missing and 1 partial ⚠️
...check/actions/sentinel/SentinelHelloCollector.java	0.00%	0 Missing and 1 partial ⚠️
...e/service/impl/DefaultCrossMasterDelayService.java	85.71%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master     #771      +/-   ##
============================================
+ Coverage     53.62%   53.65%   +0.03%     
- Complexity    10286    10309      +23     
============================================
  Files          1787     1789       +2     
  Lines         55736    55837     +101     
  Branches       5813     5829      +16     
============================================
+ Hits          29890    29961      +71     
- Misses        23305    23315      +10     
- Partials       2541     2561      +20     

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