Change initial TrustModel to committer

The current default trustmodel for gitea is the collaborator model. This is not GitHub
compatible by default. Now changing the nil default model committer would be a breaking
change and could cause commits to become unverified. Therefore we should change the
install default to committer so that new users have the github default model and
later make a breaking change to set the default to committer.

Related go-gitea#18328

Signed-off-by: Andrew Thornton <[email protected]>

Author: zeripath

routers/install/install.go

@@ -464,6 +464,8 @@ func SubmitInstall(ctx *context.Context) {
 	cfg.Section("log").Key("ROOT_PATH").SetValue(form.LogRootPath)
 	cfg.Section("log").Key("ROUTER").SetValue("console")
 
+	cfg.Section("repository.signing").Key("DEFAULT_TRUST_MODEL").SetValue("committer")
+
 	cfg.Section("security").Key("INSTALL_LOCK").SetValue("true")
 
 	var internalToken string