Fix CI/CD import

It seems that fronted ci_cd_only variable must be a string
Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

app/views/import/_githubish_status.html.haml

@@ -53,4 +53,4 @@
 
 .js-importer-status{ data: { jobs_import_path: url_for([:jobs, :import, provider]),
                              import_path: url_for([:import, provider]),
-                             ci_cd_only: has_ci_cd_only_params? } }
+                             ci_cd_only: has_ci_cd_only_params?.to_s } }