`rake gitlab:geo:check` - FDW checks run on primary as well as secondary, should be skipped

On a primary Geo node:

root@mike-geo-instance-template-1:~# gitlab-rake gitlab:geo:check
Checking Geo ...

GitLab Geo is available ... yes
GitLab Geo is enabled ... yes
GitLab Geo secondary database is correctly configured ... not a secondary node
Using database streaming replication? ... not a secondary node
GitLab Geo tracking database is configured to use Foreign Data Wrapper? ... Exception: Geo secondary database is not configured
GitLab Geo tracking database Foreign Data Wrapper schema is up-to-date? ... Exception: Geo secondary database is not configured
GitLab Geo HTTP(S) connectivity ... 
* Can connect to secondary node: 'http://mike2.gogitlab.com/' ... yes
HTTP/HTTPS repository cloning is enabled ... yes
Machine clock is synchronized ... yes
Git user has default SSH configuration? ... yes
OpenSSH configured to use AuthorizedKeysCommand ... yes
GitLab configured to disable writing to authorized_keys file ... yes

Checking Geo ... Finished

root@mike-geo-instance-template-1:~#