test: Improve test dir names (#966)
test: Improve test dir names (#966)

* test: Put temporary folder in tmp/test/, not directly in tmp/
* test: Use `Cozy Drive` as synced (sub)dir

cozy-labs/cozy-desktop,nono/cozy-desktop,nono/cozy-desktop,nono/cozy-desktop,cozy-labs/cozy-desktop,cozy-labs/cozy-desktop,nono/cozy-desktop,cozy-labs/cozy-desktop