Allow read only stores in configuration and remote files
Cosmetic
s/editable_stores/read_write_stores/
- Remove unneccessary if condition

- Clear file stores.

- Reset file store before test run

- Reset configuration logger just in case it gets updated somewhere else
Put back expectation I removed while debugging Travis failues.
Set read_only attribute only when it is passed in
Merge pull request #12 from zendesk/Saroj/readonly_stores

Allow read only stores