Add grenade plugin

This is a straight copy of the ironic code in grenade's tree to here.
This is necessary to drop ironic code from devstack and complete the
devstack plugin work, as well as just the right thing to do, and will
help us move faster on grenade work.

Note that I'm not sure if this will or will not, and it may make our
grenade jobs explode during the transition. However, our grenade jobs
don't work right now anyway, so nothing of value was lost. :)

Change-Id: I8b065c60e9e06cd7fc10749c49bdf79d878fcc12

devstack/upgrade/settings

@@ -0,0 +1,5 @@
+# eventually this will be handled by this being in the ironic tree
+if is_service_enabled ir-api; then
+   register_project_for_upgrade ironic
+   register_db_to_save ironic
+fi

devstack/upgrade/shutdown.sh

@@ -0,0 +1,18 @@
+#!/bin/bash
+#
+#
+
+set -o errexit
+
+source $GRENADE_DIR/grenaderc
+source $GRENADE_DIR/functions
+
+# We need base DevStack functions for this
+source $BASE_DEVSTACK_DIR/functions
+source $BASE_DEVSTACK_DIR/stackrc # needed for status directory
+source $BASE_DEVSTACK_DIR/lib/tls
+source $BASE_DEVSTACK_DIR/lib/ironic
+
+set -o xtrace
+
+stop_ironic

devstack/upgrade/upgrade.sh

@@ -0,0 +1,112 @@
+#!/usr/bin/env bash
+
+# ``upgrade-ironic``
+
+echo "*********************************************************************"
+echo "Begin $0"
+echo "*********************************************************************"
+
+# Clean up any resources that may be in use
+cleanup() {
+    set +o errexit
+
+    echo "*********************************************************************"
+    echo "ERROR: Abort $0"
+    echo "*********************************************************************"
+
+    # Kill ourselves to signal any calling process
+    trap 2; kill -2 $$
+}
+
+trap cleanup SIGHUP SIGINT SIGTERM
+
+# Keep track of the grenade directory
+RUN_DIR=$(cd $(dirname "$0") && pwd)
+
+# Source params
+source $GRENADE_DIR/grenaderc
+
+# Import common functions
+source $GRENADE_DIR/functions
+
+# This script exits on an error so that errors don't compound and you see
+# only the first error that occurred.
+set -o errexit
+
+# Upgrade Ironic
+# ============
+
+# Duplicate some setup bits from target DevStack
+source $TARGET_DEVSTACK_DIR/stackrc
+source $TARGET_DEVSTACK_DIR/lib/tls
+source $TARGET_DEVSTACK_DIR/lib/nova
+source $TARGET_DEVSTACK_DIR/lib/neutron-legacy
+source $TARGET_DEVSTACK_DIR/lib/ironic
+
+# Print the commands being run so that we can see the command that triggers
+# an error.  It is also useful for following allowing as the install occurs.
+set -o xtrace
+
+function is_nova_migration {
+    # Deterine whether we're "upgrading" from another compute driver
+    local old_driver=$(source $BASE_DEVSTACK_DIR/functions; source $BASE_DEVSTACK_DIR/localrc; echo $VIRT_DRIVER)
+    [ "$old_driver" != "ironic" ]
+}
+
+# Duplicate all required devstack setup that is needed before starting
+# Ironic during a sideways upgrade, where we are migrating from an
+# devstack environment without Ironic.
+function init_ironic {
+    # We need to source credentials here but doing so in the gate will unset
+    # HOST_IP.
+    local tmp_host_ip=$HOST_IP
+    source $TARGET_DEVSTACK_DIR/openrc admin admin
+    HOST_IP=$tmp_host_ip
+    IRONIC_BAREMETAL_BASIC_OPS="True"
+    $TARGET_DEVSTACK_DIR/tools/install_prereqs.sh
+    initialize_database_backends
+    recreate_database ironic utf8
+    install_nova_hypervisor
+    configure_nova_hypervisor
+    configure_ironic_dirs
+    create_ironic_cache_dir
+    configure_ironic
+    create_ironic_accounts
+    configure_tftpd
+    configure_iptables
+    configure_ironic_auxiliary
+    upload_baremetal_ironic_deploy
+    stop_nova_compute || true
+    start_nova_compute
+}
+
+
+# Save current config files for posterity
+if  [[ -d $IRONIC_CONF_DIR ]] && [[ ! -d $SAVE_DIR/etc.ironic ]] ; then
+    cp -pr $IRONIC_CONF_DIR $SAVE_DIR/etc.ironic
+fi
+
+stack_install_service ironic
+
+# If we are sideways upgrading and migrating from a base deployed /w
+# VIRT_DRIVER=fake, we need to run Ironic install, config and init
+# code from devstac.
+if is_nova_migration ; then
+    init_ironic
+fi
+
+$IRONIC_BIN_DIR/ironic-dbsync --config-file=$IRONIC_CONF_FILE
+
+start_ironic
+
+# calls upgrade-ironic for specific release
+upgrade_project ironic $RUN_DIR $BASE_DEVSTACK_BRANCH $TARGET_DEVSTACK_BRANCH
+
+# Don't succeed unless the services come up
+ensure_services_started ironic-api ironic-conductor
+ensure_logs_exist ir-cond ir-api
+
+set +o xtrace
+echo "*********************************************************************"
+echo "SUCCESS: End $0"
+echo "*********************************************************************"