Update Docker to Debian buster

[morgo]

This updates the base docker image from Debian 9 (stretch) to Debian 10 (Buster). Buster was released in July 2019.

I have also made the following changes:

• Remove misc dependencies no longer needed.
• Unpin chromium version (the version pinned is no longer available in buster)
• Install maven and etcd from repos
• Change jdk to default jdk
• Remove MYSQL_FLAVOR (should no longer be required since python tests are removed).

I am awaiting the results of a full docker bootstrap test and will paste them here.

Signed-off-by: Morgan Tocker tocker@gmail.com

[sougou]

Looks good. Still a draft?

[morgo]

Looks good. Still a draft?

Yeah, I will convert it when tests pass - and there will need to be additional testing since there are a lot of dependencies. The vitess/lite images are based on bootstrap.

I think I might have gone down a bit of a rabbit hole - it is a bit questionable to upgrade bootstrap and not lite, others. I'm looking into it more.

[deepthi]

Replaced by #6833.