sscep: rename test.sh to test-version.sh

The script only performs a version check, which is what test-version.sh
is meant for. As a version check override it also replaces the generic
per-executable probing, which warns about mkrequest not reporting the
version.

Signed-off-by: Josef Schlehofer <redacted>

diff --git a/net/sscep/test.sh b/net/sscep/test-version.sh
similarity index 100%
rename from net/sscep/test.sh
rename to net/sscep/test-version.sh