title: GCP wont work after upgrading to OSX Mojave
body: <p>After I upgraded to OSX Mojave (Developer beta 2) I get an error every time I use GCP and also at reinstalling it.</p>
  
  <pre><code>ERROR: gcloud failed to load: No module named zlib
      gcloud_main = _import_gcloud_main()
      import googlecloudsdk.gcloud_main
      from googlecloudsdk.calliope import base
      from googlecloudsdk.calliope import display
      from googlecloudsdk.calliope import display_taps
      from googlecloudsdk.core.resource import resource_printer_base
      from googlecloudsdk.core.resource import resource_projector
      from apitools.base.py import encoding as protorpc_encoding
      from apitools.base.py.base_api import *
      from apitools.base.py import http_wrapper
      import httplib2
      from httplib2.python2.httplib2 import *
      import gzip
      import zlib
  </code></pre>
  
  <p>I have tried to reinstall python as well as zlib through brew; but it did not work.</p>