Add PWS Login Server link placeholders.
- To facilitate overriding them in cf-aws-stub for testing on A1.

@see https://github.com/cloudfoundry/deployments-aws/pull/7

https://www.pivotaltracker.com/story/show/70697714
Fixed swapped template values

passwordAttributeName and passwordEncoder default values were swapped.
Now fixed.

https://www.pivotaltracker.com/story/show/71180430