switch default config to idm

- The accounts and glauth service are turned off by default
- proxy is switch from "accounts" to "cs3" for the account backend
- The LDAP configuration (graph, idp, storage) of all services now
  points to idm instead of glauth

extensions/proxy/pkg/config/defaults/defaultconfig.go

@@ -45,7 +45,7 @@ func DefaultConfig() *config.Config {
 			AllowedHTTPMethods: []string{"GET"},
 			Enabled:            true,
 		},
-		AccountBackend:        "accounts",
+		AccountBackend:        "cs3",
 		UserOIDCClaim:         "email",
 		UserCS3Claim:          "mail",
 		MachineAuthAPIKey:     "change-me-please",