scripts: Separate Capstan and VM image building

This separates Capstan and VM image building into two scripts. This is
needed to be able to drop useless VM images like "osv-base" or
"osv-openjdk" that only make sense as Capstan base images, not
standalone VM images that people boot to.

Cc: Tzach Livyatan <tzach@cloudius-systems.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>

scripts/build-osv-release → scripts/build-capstan-images

 #!/bin/sh
 
-program=$(basename $0)
-
 set -e
 
-if [ $# -lt 1 ]; then
-    echo "usage: $program [standalone|capstan]"
-    exit 1
-fi
-
-type=$1
-
-build=./scripts/build-$type-img
+build=./scripts/build-capstan-img
 
 $build cloudius/osv-base      httpserver                "OSv base image for developers"
 $build cloudius/osv           default                   "OSv with shell for users"

scripts/build-vm-images

+#!/bin/sh
+
+set -e
+
+build=./scripts/build-vm-img
+
+$build cloudius/osv           default                   "OSv with shell for users"
+$build cloudius/osv-cassandra cassandra,httpserver      "Apache Cassandra/OSv"
+$build cloudius/osv-tomcat    tomcat,httpserver         "Apache Tomcat/OSv"
+$build cloudius/osv-iperf     iperf,httpserver          "iperf/OSv"
+$build cloudius/osv-memcached-opt osv-memcached,httpserver "OSv memcached server (optimized)"