[SPARK-19042] spark executor can't download the jars when uber jar's http url...

[SPARK-19042] spark executor can't download the jars when uber jar's http url contains any query strings

If the uber jars' https contains any query strings, the Executor.updateDependencies method can't can't download the jars correctly. This is because  the "localName = name.split("/").last" won't get the expected jar's url. The bug fix is the same as [SPARK-17855]

Author: xiaojian.fxj <xiaojian.fxj@alibaba-inc.com>

Closes #16509 from hustfxj/bug.