ripe-atlas: add test.sh

ripe-atlas: add test.sh

Cover ripe-atlas-common, -probe and -anchor: the busybox measurement
applets resolve and run without crashing, the shell libraries parse, the
capabilities grant CAP_NET_RAW, uci parses the config, and each variant
ships its registration servers and host keys.

test-version.sh overrides the generic per-executable version probe, which
would otherwise run the /usr/sbin/ripe-atlas wrapper -- it has no version
flag and boots the probe instead.

Signed-off-by: Alexandru Ardelean <redacted>