avoiding race condition on assigning to @nodes
added missing docstring, and always returning a list of nodes
correctly detecting the EBS mount point when running on Xen paravirtualized hardware in AWS
allowing root connections on celery workers
removed ok_to_fail, since it was not being used
not retrying infinitely on timeout errors
rewrote documentation on make_call
removed unnecessary argument off of soap call
using named argument instead of positional arg
Merge pull request #792 from shatterednirvana/assign-nodes-correctly

Avoiding race condition on assigning to @nodes
Merge pull request #796 from shatterednirvana/allow-root-conns-on-celery

allowing root connections on celery workers
Merge pull request #795 from shatterednirvana/use-right-disk-in-xen-pv

correctly detecting the EBS mount point when running on Xen PV hardware
Merge pull request #802 from shatterednirvana/warn-on-timeouts

No longer infinitely retrying timed out SOAP calls