Sort keys when creating /root/.ssh/authorized_keys

This will ensure that later chef-client runs won't update the file just
because the order became different.
Merge pull request #139 from vuntz/sort-authorized_keys

Sort keys when creating /root/.ssh/authorized_keys
Comment out set -x to turn off verbose logging during control.sh run
Merge pull request #147 from cdearborn/pull-req-release-pebbles-master-9eeea06f37f95273598d35cd142643a7ae0ac65a

https://github.com/crowbar/barclamp-provisioner/pull/147

Merged by devtool for VictorLowther
Replace github.com/dellcloudedge mentions with github.com/crowbar
Drop attribute 'root' from bc-template-provisioner.json

It was only used in recipes/update_nodes.rb whereas recipes/base.rb used
a node[:platform] check to set the correct tftpboot path. This would
all to drop a hack in SUSE packages.
Merge pull request #150 from saschpe/release/pebbles/master-drop-root-attr

Drop attribute 'root' from bc-template-provisioner.json
Merge pull request #149 from vuntz/replace-dellcloudedge

Replace github.com/dellcloudedge mentions with github.com/crowbar