Add faketime.
KVM SR: scalability testnode integration.
KVM component: use h.r.download to download debian image.
SlapOS Stack: update buildout and h.r.download versions to use.
resiliency stack: pin old s.r.template.

Because new s.r.templare requires new Jinja2.
Resiliency: allow takeover to retry renaming until it works.
KVM SR: stop export/import if previous step failed.
KVM SR: Allow to run standalone resiliency script without testrunner.
Merge branch 'kvm'
Fix shell equality syntax.
Profile tmp environnment for nginx.
Activate gzip.
Do not allow buildout to delete ssh private key.

It prevents data loss while upgrading partition.
Freeze buildout version.
Do not fail if the ssh key already exists.
Only keep the latest status in the rss.
dcron recipe: do not use @foo syntax because it requires to give an ID
helloworld SR: redirect output to log.

Also improve overall quality.
(cherry picked from commit 7232c1e3409b65790d98d44467e4ef3739940478)
Add squid component.

It seems the only tool supporting http://tools.ietf.org/html/rfc5861
Drop non defined section usage.