title: import error after upgrade to airflow2.0.2
body: <p>Received an import error after upgrading to <strong>airflow2.0.2-python3.7</strong> image. Package seems to be installed, not sure what is causing the issue and how to fix it. Tried to uninstalling and reinstalling the packages but that does not work either.</p>
  <pre><code>{providers_manager.py:299} WARNING - Exception when importing 'airflow.providers.google.common.hooks.leveldb.LevelDBHook' from 'apache-airflow-providers-google' package: No module named 'airflow.providers.google.common.hooks.leveldb'
  
  # packages
  apache-airflow-providers-google==2.2.0
  google-ads==7.0.0
  google-api-core==1.26.3
  google-api-python-client==1.12.8
  google-auth==1.29.0
  google-auth-httplib2==0.1.0
  google-auth-oauthlib==0.4.4
  google-cloud-automl==2.3.0
  google-cloud-bigquery==2.13.1
  google-cloud-bigquery-datatransfer==3.1.1
  google-cloud-bigquery-storage==2.4.0
  google-cloud-bigtable==1.7.0
  google-cloud-container==1.0.1
  google-cloud-core==1.6.0
  google-cloud-datacatalog==3.1.1
  google-cloud-dataproc==2.3.1
  google-cloud-dlp==1.0.0
  google-cloud-kms==2.2.0
  google-cloud-language==1.3.0
  google-cloud-logging==2.3.1
  google-cloud-memcache==0.3.0
  google-cloud-monitoring==2.2.1
  google-cloud-os-login==2.1.0
  google-cloud-pubsub==2.4.1
  google-cloud-redis==2.1.0
  google-cloud-secret-manager==1.0.0
  google-cloud-spanner==1.19.1
  google-cloud-speech==1.3.2
  google-cloud-storage==1.37.1
  google-cloud-tasks==2.2.0
  google-cloud-texttospeech==1.0.1
  google-cloud-translate==1.7.0
  google-cloud-videointelligence==1.16.1
  google-cloud-vision==1.0.0
  google-cloud-workflows==0.2.0
  </code></pre>