fix(data/repository): set name and full_name attributes as computed (#780)

This avoids propagating null values when the evaluation of the data
source is deferred.

Signed-off-by: Yann Soubeyrand <[email protected]>

Author: yann-soubeyrand

github/data_source_github_repository.go

@@ -17,11 +17,13 @@ func dataSourceGithubRepository() *schema.Resource {
 			"full_name": {
 				Type:          schema.TypeString,
 				Optional:      true,
+				Computed:      true,
 				ConflictsWith: []string{"name"},
 			},
 			"name": {
 				Type:          schema.TypeString,
 				Optional:      true,
+				Computed:      true,
 				ConflictsWith: []string{"full_name"},
 			},