[OE-core] [PATCH] useradd: Use modern join syntax

[Richard Purdie]

string.join() is deprecated syntax and doesn't work under python3
so use the modern sytax instead.

Signed-off-by: Richard Purdie <richard.purdie at linuxfoundation.org>
---
diff --git a/meta/classes/useradd.bbclass b/meta/classes/useradd.bbclass
index 52c0ba4..fd61019 100644
--- a/meta/classes/useradd.bbclass
+++ b/meta/classes/useradd.bbclass
@@ -181,7 +181,7 @@ def get_all_cmd_params(d, cmd_type):
         if param:
             params.append(param)
 
-    return string.join(params, "; ")
+    return "; ".join(params)
 
 # Adds the preinst script into generated packages
 fakeroot python populate_packages_prepend () {