RFR: build: add convenience target for bots

Wed Feb 3 07:52:51 UTC 2021

On Tue, 2 Feb 2021 18:14:02 GMT, Erik Helin <ehelin at openjdk.org> wrote:

> Hi all,
> 
> please review this patch that adds a convenience target for building and extracting a image for the bots. A developer can now just run `sh gradlew bots` (or `make bots`) and find an extracted image under `bots/bin`.
> 
> Testing:
> - [x] Tested locally on Linux x64
> 
> Thanks,
> Erik

Looks good! And congratulations on pull request number 1000!

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Marked as reviewed by rwestberg (Reviewer).

PR: https://git.openjdk.java.net/skara/pull/1000