Disable logging in sudo for quantum-rootwrap

Quantum agent's calls quantum-rootwrap very frequently which. This patch
disables logging of sudo calls.
Fetch metadata_proxy_shared_secret from nova and set it accordingly
Fix guards to not execute commands on every failure
Revert "Quantum not deploying because of quantum-server restart issue."

This reverts commit ffe4760be3a39f52e6af72aee7acfb12310a52ca.
Allow to auto-generate self-signed SSL certificates

The setup is rather simple. Instead of a full-blown CA, a CSR is used to
create the self-signed certificate.
Fix "Cannot find a resource matching link[/etc/quantum/plugins/...]" (bnc#830870)

In some cases (if :quantum_server is false) we subscribed to
resources before they were defined.

Moved the subscription to a late point when the link and the main
config file are defined.

https://bugzilla.novell.com/show_bug.cgi?id=830870
Merge pull request #97 from mvidner/link-plugin-cfg-path

https://github.com/crowbar/barclamp-quantum/pull/97

Merged by devtool for cloudsleuth
Merge pull request #89 from tpaszkowski/pull-req-disable-sudo-log

Disable logging in sudo for quantum-rootwrap
Merge pull request #93 from vuntz/revert-unneeded

Revert "Quantum not deploying because of quantum-server restart issue."
Merge pull request #95 from saschpe/release/pebbles/master-ssl-gencerts

Allow to auto-generate self-signed SSL certificates
Merge pull request #99 from cdearborn/pull-req-release-pebbles-master-f36595044def1e1cadcd2a24f0aaefe40b5bfbb0

Fix guards to not execute commands on every failure [1/1]
Merge pull request #90 from saschpe/release/pebbles/master-metadata-sharedsecret

Fetch metadata_proxy_shared_secret from nova and set it accordingly
Workaround for unassigned attributes.
Merge pull request #104 from cloudsleuth/pull-req-release-pebbles-master-363650f2789537f6fc2bf2e40a1f80513c5534af

Workarounf unassigned attributes. [1/1]