Add devstack plugin

This adds the actual devstack plugin, devstack should not run the heat code
in the devstack project.
Note that this is not yet configured to run in the gate.

Change-Id: I8d0918a8f8bb8399793c7164d26739953710b3ec

devstack/README.rst

@@ -0,0 +1,15 @@
+=========================
+Enabling heat in DevStack
+=========================
+
+1. Download DevStack::
+
+     git clone https://git.openstack.org/openstack-dev/devstack
+     cd devstack
+
+2. Add this repo as an external repository into your ``local.conf`` file::
+
+     [[local|localrc]]
+     enable_plugin heat https://git.openstack.org/openstack/heat
+
+3. Run ``stack.sh``.

devstack/lib/heat

@@ -32,6 +32,22 @@ set +o xtrace
 # set up default directories
 GITDIR["python-heatclient"]=$DEST/python-heatclient
 
+# heat service
+HEAT_REPO=${HEAT_REPO:-${GIT_BASE}/openstack/heat.git}
+HEAT_BRANCH=${HEAT_BRANCH:-master}
+
+# python heat client library
+GITREPO["python-heatclient"]=${HEATCLIENT_REPO:-${GIT_BASE}/openstack/python-heatclient.git}
+GITBRANCH["python-heatclient"]=${HEATCLIENT_BRANCH:-master}
+
+# heat-cfntools server agent
+HEAT_CFNTOOLS_REPO=${HEAT_CFNTOOLS_REPO:-${GIT_BASE}/openstack/heat-cfntools.git}
+HEAT_CFNTOOLS_BRANCH=${HEAT_CFNTOOLS_BRANCH:-master}
+
+# heat example templates and elements
+HEAT_TEMPLATES_REPO=${HEAT_TEMPLATES_REPO:-${GIT_BASE}/openstack/heat-templates.git}
+HEAT_TEMPLATES_BRANCH=${HEAT_TEMPLATES_BRANCH:-master}
+
 # Toggle for deploying Heat-API under HTTPD + mod_wsgi
 HEAT_USE_MOD_WSGI=${HEAT_USE_MOD_WSGI:-False}
 

devstack/plugin.sh

@@ -0,0 +1,51 @@
+# heat.sh - Devstack extras script to install heat
+
+# Save trace setting
+XTRACE=$(set +o | grep xtrace)
+set -o xtrace
+
+echo_summary "heat's plugin.sh was called..."
+source $DEST/heat/devstack/lib/heat
+(set -o posix; set)
+
+if is_service_enabled h-eng h-api h-api-cfn h-api-cw; then
+    if [[ "$1" == "stack" && "$2" == "install" ]]; then
+        echo_summary "Installing heat"
+        install_heat
+        echo_summary "Installing heatclient"
+        install_heatclient
+        echo_summary "Installing heat other"
+        install_heat_other
+        cleanup_heat
+    elif [[ "$1" == "stack" && "$2" == "post-config" ]]; then
+        echo_summary "Configuring heat"
+        configure_heat
+
+        if is_service_enabled key; then
+            create_heat_accounts
+        fi
+
+    elif [[ "$1" == "stack" && "$2" == "extra" ]]; then
+        # Initialize heat
+        init_heat
+
+        # Start the heat API and heat taskmgr components
+        echo_summary "Starting heat"
+        start_heat
+        if [ "$HEAT_BUILD_PIP_MIRROR" = "True" ]; then
+        echo_summary "Building Heat pip mirror"
+        build_heat_pip_mirror
+        fi
+    fi
+
+    if [[ "$1" == "unstack" ]]; then
+        stop_heat
+    fi
+
+    if [[ "$1" == "clean" ]]; then
+        cleanup_heat
+    fi
+fi
+
+# Restore xtrace
+$XTRACE

devstack/settings

@@ -0,0 +1,10 @@
+# Devstack settings
+
+# We have to add Heat to enabled services for screen_it to work
+# It consists of 4 parts
+
+enable_service h-eng
+enable_service h-api
+enable_service h-api-cfn
+enable_service h-api-cw
+