Merge pull request #470 from fishtown-analytics/update/gitlab_page

Update/gitlab integration page with a troubleshoot section

website/docs/docs/dbt-cloud/cloud-configuring-dbt-cloud/connecting-gitlab.md

@@ -62,4 +62,13 @@ You can click the Authenticate button to begin the process, or follow the instru
 
 To connect your personal GitLab account, navigate to your [User Profile](https://cloud.getdbt.com/#/profile/) select the [Integrations section](https://cloud.getdbt.com/#/profile/integrations/) from the left sidebar. Under "GitLab", if your account is already connected, you’ll see "Your user account is linked to a GitLab account with username <your-gitlab-username>."
 
-If your account is not connected, you’ll see "This account is not linked to a GitLab account.” Click the button to begin the setup process. You’ll be redirected to GitLab, and then back into dbt Cloud. When you are redirected to dbt Cloud, you should now see your connected account. 
+If your account is not connected, you’ll see "This account is not linked to a GitLab account.” Click the button to begin the setup process. You’ll be redirected to GitLab, and then back into dbt Cloud. When you are redirected to dbt Cloud, you should now see your connected account. 
+
+## Troubleshooting
+
+### Errors importing a repository
+If you do not see your repository listed, double-check that:
+- Your repository is in a Gitlab group you have access to
+
+If you do see your repository listed but are unable to import the repository successfully, double-check that:
+- You are a maintainer on that repository (only users with a maintainer permissions can set up repository connections)