feat: separate --release argument for SDP version

[dervoeti]

As discussed, we need a separate argument for the SDP version because we want to include the architecture in the image tag (0.0.0-dev-amd64) but not in the RELEASE argument.

I tested the change by replacing the Zookeeper Dockerfile with this:

FROM stackable/image/java-base

ARG RELEASE
RUN <<EOF
echo "RELEASE: ${RELEASE}"
sleep 5
EOF

And then ran a few tests:

bake -p zookeeper=3.9.3 -i 0.0.0-dev-amd64
bake -p zookeeper=3.9.3 -i 0.0.0-dev-amd64 --release 0.0.0-dev
bake -p zookeeper=3.9.3 -i 0.0.0-dev-amd64 --release 0.0.0-dev-bar
bake -p zookeeper=3.9.3 -i 0.0.0-dev-amd64 --release 25.3.0
bake -p zookeeper=3.9.3 -i 0.0.0-dev-amd64 --release 25.3.0-foo
bake -p zookeeper=3.9.3 -i 0.0.0-dev-amd64 --release 25.3.0-rc13
bake -p zookeeper=3.9.3 -i 0.0.0-dev-amd64 --release 25.3.0-amd64

[razvan]

see suggestions

[razvan]

lgtm!