refactor: replace Repo.RawMeta with Repo.GetMeta

Signed-off-by: Zachary Newman <z@znewman.net>

client/client_test.go

@@ -175,9 +175,11 @@ func (s *ClientSuite) addRemoteTarget(c *C, name string) {
 }
 
 func (s *ClientSuite) rootMeta(c *C) []byte {
-	meta, err := s.repo.RawMeta("root.json")
+	meta, err := s.repo.GetMeta()
 	c.Assert(err, IsNil)
-	return meta
+	rootMeta, ok := meta["root.json"]
+	c.Assert(ok, Equals, true)
+	return rootMeta
 }
 
 func (s *ClientSuite) newClient(c *C) *Client {

repo.go

@@ -1592,11 +1592,7 @@ func (r *Repo) CheckRoleUnexpired(role string, validAt time.Time) error {
 	return nil
 }
 
-// RawMeta returns the bytes from the repo metadata dictionary, as-is
-func (r *Repo) RawMeta(roleFilename string) ([]byte, error) {
-	meta, ok := r.meta[roleFilename]
-	if !ok {
-		return nil, ErrMissingMetadata{roleFilename}
-	}
-	return meta, nil
+// GetMeta returns the underlying meta file map from the store.
+func (r *Repo) GetMeta() (map[string]json.RawMessage, error) {
+	return r.local.GetMeta()
 }