Keepalived supporting amphorae image

Added support of keepalived in the amphora image as follows:
1. diskimage-create.sh: append the vrrp-octavia by default.
2. image-test.sh: checks if the image has keepalived installed.
3. 77-vrrp: checkout the right keepalived source code version, compile, and
install binaries.
4. svc-map: clone the keepalived rep.
5. fixed some typos in comments and readme

Change-Id: I483a66590fc343c07ca37bc11c2ad5482594d4cc

diskimage-create/diskimage-create.sh

@@ -148,6 +148,8 @@ AMP_IMAGESIZE=${AMP_IMAGESIZE:-5}
 
 OCTAVIA_ELEMENTS_PATH=$OCTAVIA_REPO_PATH/elements
 
+
+
 if ! [ -d $OCTAVIA_ELEMENTS_PATH ]; then
     echo "ERROR: Octavia elements directory not found at: " $OCTAVIA_ELEMENTS_PATH " Exiting."
     exit 1
@@ -328,6 +330,9 @@ fi
 # Add the Octavia Amphora agent.py element
 AMP_element_sequence="$AMP_element_sequence amphora-agent"
 
+# Add the vrrp Octacia element
+AMP_element_sequence="$AMP_element_sequence vrrp-octavia"
+
 # Allow full elements override
 if [ "$DIB_ELEMENTS" ]; then
     AMP_element_sequence="$DIB_ELEMENTS"

diskimage-create/image-tests.sh

@@ -86,5 +86,17 @@ else
     echo "HAProxy package found in the Amphora image"
 fi
 
+# Check for KeepAlived
+virt-inspector $AMP_IMAGE_LOCATION | \
+    virt-inspector --xpath \
+    '/operatingsystems/operatingsystem/applications/application/name[text()="keepalived"]' \
+    | grep -q '<name>keepalived</name>'
+if [ $? != 0 ]; then
+    echo "ERROR: Amphora image is missing the keepalived package"
+    exit 1
+else
+    echo "keepalived package found in the Amphora image"
+fi
 echo "Amphora image looks good."
+
 exit 0

elements/vrrp-octavia/README.rst

@@ -0,0 +1,3 @@
+Element to install keepalived.
+
+

elements/vrrp-octavia/element-deps

@@ -0,0 +1 @@
+source-repositories

elements/vrrp-octavia/install.d/77-vrrp

@@ -0,0 +1,9 @@
+#!/bin/bash
+set -eux
+
+#Checks out keepalived version 1.2.13, compiles and installs binaries.
+cd /opt/vrrp-octavia/
+git checkout v1.2.13
+./configure
+make
+make install

elements/vrrp-octavia/source-repository-vrrp-octavia

@@ -0,0 +1,2 @@
+# Clone source for keepalived version 1.2.13. Correct version is in the installation script
+vrrp-octavia git /opt/vrrp-octavia https://github.com/acassen/keepalived

elements/vrrp-octavia/svc-map

@@ -0,0 +1,2 @@
+vrrp-octavia:
+  default: vrrp-octavia