items/download: wrap node.run() in try..except to avoid killing the whole apply

items/download.py

@@ -53,11 +53,14 @@ class Download(Item):
             pass
         else:
             # download file
+            try:
                 self.node.run("curl -L {verify}-s -o {file} -- {url}".format(
                     verify="" if self.attributes.get('verifySSL', True) else "-k ",
                     file=quote(self.name),
                     url=quote(self.attributes['url'])
                 ))
+            except:
+                return False
 
             # check hash
             sha256 = self.__hash_remote_file(self.name)