compliance: cleanup compliance test code

zot ci/cd tests are too stict, so separate and relax them for compliance
tests.

Location header is set in some cases, but some clarification is needed
in URL construction.

Fix some incorrect compliance tests.

pkg/api/controller.go

@@ -42,6 +42,7 @@ func (c *Controller) Run() error {
 		handlers.PrintRecoveryStack(false)))
 
 	c.Router = engine
+	c.Router.UseEncodedPath()
 	_ = NewRouteHandler(c)
 
 	c.ImageStore = storage.NewImageStore(c.Config.Storage.RootDirectory, c.Log)