zypper.py: fix version argument being ignored

salt/modules/zypper.py

@@ -1205,6 +1205,15 @@ def install(name=None,
         return {}
 
     version_num = Wildcard(__zypper__)(name, version)
+
+    if version_num:
+        if pkgs is None and sources is None:
+            # Allow "version" to work for single package target
+            pkg_params = {name: version_num}
+        else:
+            log.warning('"version" parameter will be ignored for multiple '
+                        'package targets')
+
     if pkg_type == 'repository':
         targets = []
         problems = []