[INLONG-583] Adjust BrokerConfManager class implementation

[gosonzhang]

1. Replace BrokerConfManager with MetaDataManager;
2. Clean up useless code implementations

[codecov-commenter]

Codecov Report

Merging #462 (fd83e71) into TUBEMQ-570 (b3e14b9) will increase coverage by 0.71%.
The diff coverage is 0.93%.

@@               Coverage Diff               @@
##             TUBEMQ-570    #462      +/-   ##
===============================================
+ Coverage          6.60%   7.32%   +0.71%     
  Complexity          477     477              
===============================================
  Files               300     298       -2     
  Lines             33480   31190    -2290     
  Branches           5573    5045     -528     
===============================================
+ Hits               2212    2284      +72     
+ Misses            30795   28437    -2358     
+ Partials            473     469       -4     

Impacted Files	Coverage Δ	Complexity Δ
...emq/server/common/paramcheck/PBParameterUtils.java	17.32% <0.00%> (+0.49%)	14.00 <0.00> (ø)
.../tubemq/server/common/utils/WebParameterUtils.java	0.00% <ø> (-1.49%)	0.00 <0.00> (-8.00)
.../java/org/apache/tubemq/server/master/TMaster.java	0.00% <0.00%> (ø)	0.00 <0.00> (ø)
...emq/server/master/balance/DefaultLoadBalancer.java	0.00% <0.00%> (ø)	0.00 <0.00> (ø)
...bemq/server/master/metamanage/MetaDataManager.java	0.35% <0.00%> (+0.35%)	1.00 <0.00> (+1.00)
...amanage/metastore/dao/entity/BrokerConfEntity.java	0.00% <0.00%> (ø)	0.00 <0.00> (ø)
...er/nodemanage/nodebroker/BrokerSyncStatusInfo.java	0.00% <0.00%> (ø)	0.00 <0.00> (ø)
...emq/server/master/web/MasterStatusCheckFilter.java	0.00% <0.00%> (ø)	0.00 <0.00> (ø)
...tubemq/server/master/web/action/screen/Master.java	0.00% <0.00%> (ø)	0.00 <0.00> (ø)
...ubemq/server/master/web/action/screen/Tubeweb.java	0.00% <0.00%> (ø)	0.00 <0.00> (ø)
... and 14 more

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