Fixing unit tests for client manager.

* [x] pmapi: refresh auth uid won't change
* [x] bridge tests:
    * update mocks
    * delete auth when FinishLogin fails
    * check for mailbox password
    * add `gomock.InOrder` for better test control
* [x] fix linter issues except TODOs
* [x] make rootScheme unexported
* [x] store tests: update mocks

pkg/pmapi/req.go

@@ -27,7 +27,6 @@ import (
 
 // NewRequest creates a new request.
 func (c *client) NewRequest(method, path string, body io.Reader) (req *http.Request, err error) {
-	// TODO: Support other protocols (localhost needs http not https).
 	req, err = http.NewRequest(method, c.cm.GetRootURL()+path, body)
 
 	if req != nil {