* main: disambiguate arg ordering test
Make it extra clear what order of args we are asserting.
* command: fix plan -refresh=false test
The test for plan -refresh=false was not functioning, since ReadResource will not be called if the resource is not in prior state.
Add a new fixture directory with state, and also test the converse, to prevent regression.
* command: add test for refresh flag precedence
A consumer relies on the fact that running terraform plan -refresh=false -refresh true gives the same result as terraform plan -refresh=true.