[KIECLOUD-209] add sha512 and no-color options to build-overrides.sh

[errantepiphany]

[KIECLOUD-209] add sha512 and no-color options to build-overrides.sh
https://issues.jboss.org/browse/KIECLOUD-209

Signed-off-by: David Ward dward@redhat.com

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[tmckayus]

@errantepiphany looks good to me, the option from build-osbs.sh works, I did local test with a build.

The only thing I noticed is that there is not a short-option for no-color, and I don't see it in the help (but that might be intentional)

[errantepiphany]

We're running out of meaningful single letters for short options, so that's on purpose. However, I did add the long option to the help (good catch).