Integrate zosstorage build path and runtime orchestration

Summary:

* add openssh-client to the builder image and mount host SSH keys into the dev container when available

* switch RFS to git builds, register the zosstorage source, and document the extra Rust component

* wire zosstorage into the build: add build_zosstorage(), ship the binary in the initramfs, and extend component validation

* refresh kernel configuration to 6.12.49 while dropping Xen guest selections and enabling counted-by support

* tighten runtime configs: use cached mycelium key path, add zosstorage zinit unit, bootstrap ovsdb-server, and enable openvswitch module

* adjust the network health check ping invocation and fix the RFS pack-tree --debug flag order

* update NOTES changelog, README component list, and introduce a runit helper for qemu/cloud-hypervisor testing

* add ovsdb init script wiring under config/zinit/init and ensure zosstorage is available before mycelium

config/zinit/init/ovs-dbserver.sh

@@ -0,0 +1,32 @@
+#!/bin/bash
+# Simple script to create OVS database and start ovsdb-server
+
+# Configuration
+DATABASE=${DATABASE:-"/etc/openvswitch/conf.db"}
+DBSCHEMA="/usr/share/openvswitch/vswitch.ovsschema"
+DB_SOCKET=${DB_SOCKET:-"/var/run/openvswitch/db.sock"}
+RUNDIR="/var/run/openvswitch"
+
+# Create run directory
+mkdir -p "$RUNDIR"
+
+# Create database if it doesn't exist
+if [ ! -e "$DATABASE" ]; then
+    echo "Creating database: $DATABASE"
+    ovsdb-tool create "$DATABASE" "$DBSCHEMA"
+fi
+
+# Check if database needs conversion
+if [ "$(ovsdb-tool needs-conversion "$DATABASE" "$DBSCHEMA")" = "yes" ]; then
+    echo "Converting database: $DATABASE"
+    ovsdb-tool convert "$DATABASE" "$DBSCHEMA"
+fi
+
+# Start ovsdb-server
+echo "Starting ovsdb-server..."
+exec ovsdb-server \
+    --remote=punix:"$DB_SOCKET" \
+    --remote=db:Open_vSwitch,Open_vSwitch,manager_options \
+    --pidfile \
+    --detach \
+    "$DATABASE"