Java License fetcher script is broken on 2.23.0 release branch.

01:13:23  > Task :sdks:java:container:pullLicenses
01:13:23  Traceback (most recent call last):
01:13:23    File "/home/jenkins/jenkins-slave/workspace/beam_PreCommit_Java_Phrase/src/sdks/java/container/license_scripts/pull_licenses_java.py", line 53, in pull_from_url
01:13:23      url_read = urlopen(url)
01:13:23    File "/usr/lib/python3.5/urllib/request.py", line 163, in urlopen
01:13:23      return opener.open(url, data, timeout)
01:13:23    File "/usr/lib/python3.5/urllib/request.py", line 472, in open
01:13:23      response = meth(req, response)
01:13:23    File "/usr/lib/python3.5/urllib/request.py", line 582, in http_response
01:13:23      'http', request, response, code, msg, hdrs)
01:13:23    File "/usr/lib/python3.5/urllib/request.py", line 504, in error
01:13:23      result = self._call_chain(*args)
01:13:23    File "/usr/lib/python3.5/urllib/request.py", line 444, in _call_chain
01:13:23      result = func(*args)
01:13:23    File "/usr/lib/python3.5/urllib/request.py", line 696, in http_error_302
01:13:23      return self.parent.open(new, timeout=req.timeout)
01:13:23    File "/usr/lib/python3.5/urllib/request.py", line 472, in open
01:13:23      response = meth(req, response)
01:13:23    File "/usr/lib/python3.5/urllib/request.py", line 582, in http_response
01:13:23      'http', request, response, code, msg, hdrs)
01:13:23    File "/usr/lib/python3.5/urllib/request.py", line 510, in error
01:13:23      return self._call_chain(*args)
01:13:23    File "/usr/lib/python3.5/urllib/request.py", line 444, in _call_chain
01:13:23      result = func(*args)
01:13:23    File "/usr/lib/python3.5/urllib/request.py", line 590, in http_error_default
01:13:23      raise HTTPError(req.full_url, code, msg, hdrs, fp)
01:13:23  urllib.error.HTTPError: HTTP Error 404: Not Found
01:13:23  ERROR:root:Invalid url for junrar-4.0.0: https://raw.github.com/junrar/junrar/master/license.txt. Retrying...
01:13:23