vici: Add redirect command

This allows redirecting IKE_SAs by multiple different selectors, if none
are given all SAs are redirected.

src/libcharon/plugins/vici/ruby/lib/vici.rb

@@ -504,6 +504,12 @@ module Vici
                     "control-log", &block))
     end
 
+    ##
+    # Redirect an IKE_SA.
+    def redirect(options)
+      check_success(@transp.request("redirect", Message.new(options)))
+    end
+
     ##
     # Install a shunt/route policy.
     def install(policy)