Adding EX_AGGREGATE exit code and using it

salt/client/ssh/__init__.py

@@ -559,8 +559,8 @@ class SSH(object):
                     sret,
                     outputter,
                     self.opts)
-
-        sys.exit(final_exit)
+        if final_exit:
+            sys.exit(salt.defaults.exitcodes.EX_AGGREGATE)
 
 
 class Single(object):

salt/defaults/exitcodes.py

@@ -15,6 +15,9 @@ EX_THIN_DEPLOY = 11
 EX_THIN_CHECKSUM = 12
 EX_MOD_DEPLOY = 13
 
+# One of a collection failed
+EX_AGGREGATE = 20
+
 # The os.EX_* exit codes are Unix only so in the interest of cross-platform
 # compatiblility define them explicitly here.
 #