RFR: 8254282: Add Linux x86_32 builds to submit workflow

[Erik Joelsson]

On Mon, 12 Oct 2020 12:46:57 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

> Building x86_32 usually exposes 32/64 cleanliness problems early. Since 32-bit builds break often, it might make sense
> to add them to submit workflow. The x86_32 might not be widely deployed by itself, but 32/64 bit cleanliness detects
> bugs that manifest on ARM32 early.

Marked as reviewed by erikj (Reviewer).

-------------

PR: https://git.openjdk.java.net/jdk/pull/608