Add post_install.sh script

This adds post_install.sh that is executed rigt after rpm package
installation. The script does the Fuel 7.0 configuration changes
required for MidoNet plugin:
1. Enables experimental features in /etc/fuel/7.0/version.yaml
2. Restarts Nailgun to apply experimental features setting
3. Adds MidoNet custom NSDB & GW Fuel roles
4. Enables MidoNet NSDB Fuel & GW deployment tasks

Change-Id: I4efd71a0f98f88a3a170079e5e674266c4f35e96

post_install.sh

@@ -0,0 +1,107 @@
+#!/bin/bash
+#
+# Fuel 7.0 default deployment config hack script
+#
+
+#TODO: rollback all changes on package uninstall (uninstall.sh)
+
+YAML_CFG=/etc/fuel/7.0/version.yaml
+export KEYSTONE_USER=admin
+export KEYSTONE_PASS=$(sed -n '/"FUEL_ACCESS"/,/"BOOTSTRAP"/s/\(^[ ]*"password": "\)\(.*\)\("\)/\2/p' /etc/fuel/astute.yaml)
+# Fuel 7.0 maintenance upgrade totally changed astute.yaml formatting!
+[ -z "$KEYSTONE_PASS" ] && KEYSTONE_PASS=$(sed -n '/FUEL_ACCESS/,/HOSTNAME/s/\(^[ ]*password: \)\(.*\)\(\)/\2/p' /etc/fuel/astute.yaml)
+
+# Enable Fuel experimental features
+if ! grep -q "\- experimental" $YAML_CFG; then
+  echo "Enableing Fuel experimental features in $YAML_CFG"
+  sed -i 's|^\([ ]*\)- mirantis|\0\n\1- experimental|' $YAML_CFG
+  dockerctl restart nailgun > /dev/null
+  echo -n "Restarting Nailgun"
+  while ! fuel plugins &> /dev/null; do
+    echo -n .
+    sleep 1
+  done
+  echo
+#  dockerctl restart nginx
+#  dockerctl shell cobbler
+#  cobbler sync
+fi
+
+# Generate and register additional roles
+echo "Updating MidoNet NSDB & GW Fuel roles:"
+cat > /tmp/role-nsdb.yaml << THEEND
+name: nsdb
+meta:
+  name: Network State Database for MidoNet
+  description: MidoNet Synchronization Services
+volumes_roles_mapping:
+  - allocate_size: min
+    id: os
+THEEND
+cat > /tmp/role-gw.yaml << THEEND
+name: midonet-gw
+meta:
+  name: MidoNet HA Gateway
+  description: MidoNet Gateway
+volumes_roles_mapping:
+- allocate_size: min
+  id: os
+THEEND
+REL=$(fuel rel 2>/dev/null | grep "on Ubuntu" | awk '{ print $1 }')
+fuel role --update --rel $REL --file /tmp/role-nsdb.yaml 2> /dev/null
+fuel role --update --rel $REL --file /tmp/role-gw.yaml 2> /dev/null
+rm -rf /tmp/role-nsdb.yaml /tmp/role-gw.yaml
+
+# Check if additional deployment tasks needs to be enabled
+pushd /tmp > /dev/null
+fuel rel --rel $REL --deployment-tasks --download 2> /dev/null
+if ! grep -q "\- id: nsdb" release_$REL/deployment_tasks.yaml; then
+  echo "Enabling MidoNet NSDB Fuel deployment tasks"
+  cat >> release_$REL/deployment_tasks.yaml << THEEND
+- id: nsdb
+  parameters:
+    strategy:
+      type: parallel
+  requires:
+  - deploy_start
+  required_for:
+  - deploy_end
+  role:
+  - nsdb
+  type: group
+  tasks:
+  - logging
+  - hiera
+  - globals
+  - netconfig
+THEEND
+  fuel rel --rel $REL --deployment-tasks --upload 2> /dev/null
+fi
+if ! grep -q "\- id: midonet-gw" release_$REL/deployment_tasks.yaml; then
+  echo "Enabling MidoNet GW Fuel deployment tasks"
+  cat >> release_$REL/deployment_tasks.yaml << THEEND
+- id: midonet-gw
+  parameters:
+    strategy:
+      type: parallel
+  required_for:
+  - deploy_end
+  requires:
+  - deploy_start
+  role:
+  - midonet-gw
+  tasks:
+  - logging
+  - hiera
+  - globals
+  - netconfig
+  type: group
+THEEND
+  fuel rel --rel $REL --deployment-tasks --upload 2> /dev/null
+fi
+rm -rf /tmp/release_$REL/deployment_tasks.yaml
+popd > /dev/null
+
+echo Done.
+echo
+