Ubuntu and JDK 11 support

[ericsun2]

Due to the company rules/policies, I can't use CentOS and JDK 8 to build & launch StarRocks.

I have to go with:

• Ubuntu 20:04
• JDK 11

There is also another dependency on Oracle JDK 8u41 after pulling hadoop-3.0.0.tar.gz, I assume that needs a version bump too.

Are there concerns about another dev image with different OS and JDK?

ericsun2@f16beb6 is an attempt for the potential PR.

[luohaha]

You can try to replace hadoop-3.0.0.tar.gz with new version hadoop which support JDK11. Maybe some changes here: https://github.com/StarRocks/starrocks/blob/f0ef1eabe6f9e309b0e1203600a0e37c59c87caf/thirdparty/vars-x86_64.sh#L13. And then use this StarRocks repo to build such image.

[chaoyli]

@ericsun2 The ubuntu build have been addressed in https://github.com/StarRocks/starrocks/blob/main/docs/developers/build-starrocks/build_starrocks_on_ubuntu.md