add support for specifying GitHub teams

Signed-off-by: Jakub Sokołowski <jakub@status.im>

defaults/main.yml

@@ -30,6 +30,7 @@ alertmanager_oauth_id: ~
 alertmanager_oauth_secret: ~
 alertmanager_oauth_cookie_secret: ~
 alertmanager_oauth_gh_org: ~
+alertmanager_oauth_gh_teams: []
 alertmanager_oauth_cont_port: 8092
 alertmanager_oauth_cont_tag: 'v5.0.0'
 alertmanager_oauth_cont_image: 'quay.io/pusher/oauth2_proxy:{{ alertmanager_oauth_cont_tag }}'

templates/docker-compose.yml.j2

@@ -37,6 +37,9 @@ services:
       --email-domain='*'
       --provider='github'
       --github-org='{{ alertmanager_oauth_gh_org | mandatory }}'
+{% if alertmanager_oauth_gh_teams %}
+      --github-team='{{ alertmanager_oauth_gh_teams | join(",") }}'
+{% endif %}
       --cookie-domain='{{ alertmanager_domain | mandatory }}'
       --cookie-secret='{{ alertmanager_oauth_cookie_secret | mandatory }}'
       --client-id='{{ alertmanager_oauth_id | mandatory }}'