Update juju/testing dependency

Fixes LP #1325707.
networker API facade
fix dependencies
remove extra files
If we have a replica set, set write-majority
provider/ec2: support zone= placement directive

Support "add-machine zone=us-east-1a" in ec2,
for explicit availability zone placement.
Backout change to use replica sets for local provider
Merge pull request #24 from voidspace/backout-local-replicaset

This PR backs out the change that switched replica sets on for local provider. This is the change that broke local-deploy-precise-amd64 CI.
Switch to juju/schema.

Remove the schema package.
Fix import paths.
Update dependencies.
Test that write-majority is not set when there's no replica set
Merge pull request #25 from frankban/remove-schema

Remove the schema package.
Fix import paths.
Update dependencies.
Merge pull request #8 from axw/provider-ec2-zone-placement

Support "add-machine zone=us-east-1a" in ec2, for explicit availability zone placement.
split SetUpTest functions
fix comment
Switch to juju/names.

Mechanical branch.
Remove the names package.
Fix import paths.
Update dependencies.
Fix a package test.
minor fixes
Merge pull request #27 from frankban/remove-names

Mechanical branch.
Remove the names package.
Fix import paths.
Update dependencies.
Fix a package test.
Test setting of WMode
utils: remove most of it and use juju/utils instead.

utils/ssh and utils/syslog remain in core pending removal of their
core dependencies.

This is a mechanical change.
Set J:true unconditionally for the mongo session