docker: support configuring JVM memory environment variables in docke…

[changxue2022]

docker: support configuring JVM memory environment variables in docker compose file:IOTDB_JMX_OPTS for datanode,CONFIGNODE_JMX_OPTS for confignode

Description

configure JVM memory with environment variables in docker compose file

#docker-compose file
    environment:
      # for datanode
      - IOTDB_JMX_OPTS=-Xms4G -Xmx4G -XX:MaxDirectMemorySize=1G
      # for confignode
      - CONFIGNODE_JMX_OPTS=-Xms1G -Xmx1G -XX:MaxDirectMemorySize=256M

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This PR has:

• been self-reviewed.
  • concurrent read
  • concurrent write
  • concurrent read and write
• added documentation for new or modified features or behaviors.
• added Javadocs for most classes and all non-trivial methods.
• added or updated version, license, or notice information
• added comments explaining the "why" and the intent of the code wherever would not be obvious
  for an unfamiliar reader.
• added unit tests or modified existing tests to cover new code paths, ensuring the threshold
  for code coverage.
• added integration tests.
• been tested in a test IoTDB cluster.

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Key changed/added classes (or packages if there are too many classes) in this PR