Fix: zypper handling of multiple version packages

For kernel packages, zypper reports multiple versions as "new" during
upgrade. Thus, a salt state requesting pkg.latest of any kernel package
would fail, even though zypper runs successfully. This commit provides
a simple fix.

salt/modules/zypper.py

@@ -1068,6 +1068,12 @@ def install(name=None,
 
     __context__.pop('pkg.list_pkgs', None)
     new = list_pkgs()
+
+    # Handle packages which report multiple new versions
+    # (affects only kernel packages at this point)
+    for pkg in new:
+        new[pkg] = new[pkg].split(',')[-1]
+
     ret = salt.utils.compare_dicts(old, new)
 
     if errors: