liyuntao opened a new pull request #6340: [Issue 6338][Helm]explicit statement 
env-var 'BOOKIE_MEM' and 'BOOKIE_GC' for values-mini.yaml
URL: https://github.com/apache/pulsar/pull/6340
 
 
   Fixes #6338
   
   ### Motivation
   This commit started while I was using helm in my local minikube. I noticed 
that there's a mismatch between above two files. At first I thought it was a 
copy/paste error. So I created #6338;
   
   Then I looked into the details how these env-vars[ were 
used](https://github.com/apache/pulsar/blob/28875d5abc4cd13a3e9cc4f59524d2566d9f9f05/conf/bkenv.sh#L36),
 I've found its ok to use `PULSAR_MEM ` as an alternative. But it introduce 
problems:
   1. Since `BOOKIE_GC` was not defined , the default 
[BOOKIE_EXTRA_OPTS](https://github.com/apache/pulsar/blob/28875d5abc4cd13a3e9cc4f59524d2566d9f9f05/conf/bkenv.sh#L39)
  will finally use default value of `BOOKIE_GC`, thus would cover same the JVM 
parameters defined prior in PULSAR_MEM.
   2. May cause problems when bootstrap scripts changed in later dev. Better to 
make it explicitly.
   
   So I create this pr to solve above problems(hidden trouble).
   
   ### Modifications
   
   As mentioned above, I've made such modification below:
   1. make `BOOKIE_MEM` and `BOOKIE_GC` explicit in `values-mini.yaml` file.  
Keep up with the format in`values.yaml` file.
   2. remove all  print-gc-logs related args. Considering the resource 
constraints of minikube environment. The removed part's content is 
`-XX:+PrintGCDetails -XX:+PrintGCTimeStamps -XX:+PrintGCApplicationStoppedTime 
-XX:+PrintHeapAtGC -verbosegc -XX:G1LogLevel=finest`
   3. leave `PULSAR_PREFIX_dbStorage_rocksDB_blockCacheSize` empty as usual, as 
[conf/standalone.conf#L576](https://github.com/apache/pulsar/blob/df152109415f2b10dd83e8afe50d9db7ab7cbad5/conf/standalone.conf#L576)
 says it would to use 10% of the direct memory size by default.
   
   ### Verifying this change
   
   This change is a trivial rework / code cleanup without any test coverage.
   
   ### Does this pull request potentially affect one of the following parts:
   
   No
   
   ### Documentation
     - Does this pull request introduce a new feature? (no)

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