Fix domain-filter matching logic to not match similar domain names

Create a non-root user to run the container process as

Fix TLS issue with OpenStack auth (Designate)

Fix #738 issue and small docs

Fix nil map access of endpoint labels

Fix wrong entry in changelog

Update changelog to v0.5.8

Rfc2136 provider

Correctly populate target health check on existing records

Document how to use a different security context

Added linode to supported cloud providers

Continue even if node listing fails

Allow AWS batching to fully sync on each run

Replace glog with a noop logger

Fix handling of custom TTL values with Google DNS.

This is an update to the order in which we have the new mock methods.

Removed comment and added comment to exported mock helper.

Updating CHANGELOG.md to v0.5.6