Fix bugs for installing docker, bug #1237581.
  -The change in install_docker.sh corrects a typo ('=' should be '-').
   This typo resutls in 'unable to locate the packet' error when executing apt-get.

  -The second change is in hypervisor-docker fix the error for reporting
   docker is not installed when docker is actually set up. The original line
   missed the version part of the package name.

Change-Id: Ic48f45158cf84f89080f095d53c355e9f6969bfd
diff --git a/lib/nova_plugins/hypervisor-docker b/lib/nova_plugins/hypervisor-docker
index 4c8fc27..427554b 100644
--- a/lib/nova_plugins/hypervisor-docker
+++ b/lib/nova_plugins/hypervisor-docker
@@ -72,7 +72,7 @@
     fi
 
     # Make sure Docker is installed
-    if ! is_package_installed lxc-docker; then
+    if ! is_package_installed lxc-docker-${DOCKER_PACKAGE_VERSION}; then
         die $LINENO "Docker is not installed.  Please run tools/docker/install_docker.sh"
     fi