Make sure that the environTag is always set on the state.State struct when calling Open.
Make the state server info return a tag.
Fix ordering and state initialization.
Clean up the test.
Merge pull request #605 from howbazaar/state-env-tag-always-set

Ensure that environTag is always set on state.State when Opened

When we Open state we need to set the environment tag.

Previously the environment tag was only specified when the database was initialized.  Now we set it every time the database connection is opened.  This is required for when we have multiple environments, and we want to filter the results based on the current environment.

A follow-up branch will update this tag based on the environment uuid from the api server when passing the state connection to the facades of the API server.