fix: stop templating falling over keycloak

homeserver.yaml.tmpl

@@ -1871,31 +1871,6 @@ saml2_config:
 # recognised.)
 #
 oidc_providers:
-  # Generic example
-  #
-  #- idp_id: my_idp
-  #  idp_name: "My OpenID provider"
-  #  idp_icon: "mxc://example.com/mediaid"
-  #  discover: false
-  #  issuer: "https://accounts.example.com/"
-  #  client_id: "provided-by-your-issuer"
-  #  client_secret: "provided-by-your-issuer"
-  #  client_auth_method: client_secret_post
-  #  scopes: ["openid", "profile"]
-  #  authorization_endpoint: "https://accounts.example.com/oauth2/auth"
-  #  token_endpoint: "https://accounts.example.com/oauth2/token"
-  #  userinfo_endpoint: "https://accounts.example.com/userinfo"
-  #  jwks_uri: "https://accounts.example.com/.well-known/jwks.json"
-  #  skip_verification: true
-  #  user_mapping_provider:
-  #    config:
-  #      subject_claim: "id"
-  #      localpart_template: "{{ user.login }}"
-  #      display_name_template: "{{ user.name }}"
-  #      email_template: "{{ user.email }}"
-  #  attribute_requirements:
-  #    - attribute: userGroup
-  #      value: "synapseUsers"
 
   {{ if eq (env "KEYCLOAK_ENABLED") "1" }}
   - idp_id: keycloak
@@ -1906,8 +1881,8 @@ oidc_providers:
     scopes: ["openid", "profile"]
     user_mapping_provider:
       config:
-        localpart_template: "{{ user.preferred_username }}"
-        display_name_template: "{{ user.name }}"
+        localpart_template: "{{ "user.preferred_username" }}"
+        display_name_template: "{{ "user.name" }}"
   {{ end }}