Merge lp:~blake-rouse/maas/fix-1472707-1.7 into lp:maas/1.7

[Blake Rouse]

Use CompressedAmpList for the ListBootImages RPC call.

Backport: https://code.launchpad.net/~blake-rouse/maas/fix-1472707/+merge/266618

[Blake Rouse (blake-rouse)]

Backport self-approval.

review: Approve

[MAAS Lander (maas-lander)]

The attempt to merge lp:~blake-rouse/maas/fix-1472707-1.7 into lp:maas/1.7 failed. Below is the output from the failed tests.

Ign http://security.ubuntu.com trusty-security InRelease
Ign http://nova.clouds.archive.ubuntu.com trusty InRelease
Hit http://security.ubuntu.com trusty-security Release.gpg
Ign http://nova.clouds.archive.ubuntu.com trusty-updates InRelease
Hit http://security.ubuntu.com trusty-security Release
Hit http://nova.clouds.archive.ubuntu.com trusty Release.gpg
Hit http://nova.clouds.archive.ubuntu.com trusty-updates Release.gpg
Hit http://nova.clouds.archive.ubuntu.com trusty Release
Hit http://nova.clouds.archive.ubuntu.com trusty-updates Release
Hit http://security.ubuntu.com trusty-security/main Sources
Hit http://security.ubuntu.com trusty-security/universe Sources
Hit http://nova.clouds.archive.ubuntu.com trusty/main Sources
Hit http://nova.clouds.archive.ubuntu.com trusty/universe Sources
Hit http://security.ubuntu.com trusty-security/main amd64 Packages
Hit http://nova.clouds.archive.ubuntu.com trusty/main amd64 Packages
Hit http://security.ubuntu.com trusty-security/universe amd64 Packages
Hit http://nova.clouds.archive.ubuntu.com trusty/universe amd64 Packages
Hit http://security.ubuntu.com trusty-security/main Translation-en
Hit http://security.ubuntu.com trusty-security/universe Translation-en
Hit http://nova.clouds.archive.ubuntu.com trusty/main Translation-en
Hit http://nova.clouds.archive.ubuntu.com trusty/universe Translation-en
Hit http://nova.clouds.archive.ubuntu.com trusty-updates/main Sources
Hit http://nova.clouds.archive.ubuntu.com trusty-updates/universe Sources
Hit http://nova.clouds.archive.ubuntu.com trusty-updates/main amd64 Packages
Hit http://nova.clouds.archive.ubuntu.com trusty-updates/universe amd64 Packages
Hit http://nova.clouds.archive.ubuntu.com trusty-updates/main Translation-en
Hit http://nova.clouds.archive.ubuntu.com trusty-updates/universe Translation-en
Ign http://nova.clouds.archive.ubuntu.com trusty/main Translation-en_US
Ign http://nova.clouds.archive.ubuntu.com trusty/universe Translation-en_US
Reading package lists...
sudo DEBIAN_FRONTEND=noninteractive apt-get -y \
     --no-install-recommends install apache2 authbind bind9 bind9utils build-essential bzr-builddeb curl daemontools debhelper dh-apport distro-info dnsutils firefox freeipmi-tools gjs ipython isc-dhcp-common libjs-raphael libjs-yui3-full libjs-yui3-min libpq-dev make pep8 postgresql pyflakes python-amqplib python-bson python-bzrlib python-celery python-convoy python-crochet python-cssselect python-curtin python-dev python-distro-info python-django python-django-piston python-django-south python-djorm-ext-pgarray python-docutils python-extras python-fixtures python-flake8 python-formencode python-hivex python-httplib2 python-jinja2 python-jsonschema python-lockfile python-lxml python-mimeparse python-mock python-netaddr python-netifaces python-nose python-oauth python-openssl python-paramiko python-pexpect python-pip python-pocket-lint python-psycopg2 python-pyinotify python-seamicroclient python-simplejson python-simplestreams python-sphinx python-subunit python-tempita python-testresources python-testscenarios py...

=== modified file 'src/provisioningserver/rpc/cluster.py'
--- src/provisioningserver/rpc/cluster.py	2014-12-08 16:50:57 +0000
+++ src/provisioningserver/rpc/cluster.py	2015-07-31 20:47:37 +0000
@@ -40,6 +40,7 @@
 from provisioningserver.rpc import exceptions
 from provisioningserver.rpc.arguments import (
     Bytes,
+    CompressedAmpList,
     ParsedURL,
     StructureAsJSON,
     )
@@ -58,7 +59,7 @@
 
     arguments = []
     response = [
-        (b"images", amp.AmpList(
+        (b"images", CompressedAmpList(
             [(b"osystem", amp.Unicode()),
              (b"architecture", amp.Unicode()),
              (b"subarchitecture", amp.Unicode()),