title: Connection type not added on MWAA's Web UI after python dependencies installed successfully
body: <p>I have successfully enable a MWAA environment (<strong>Airflow version: 2.0.2</strong>) and install python dependencies for MSSQL, MySQL and Oracle. But connections for these 3 databases are not added into the drop down list on Web UI. Any idea?</p>
  <ol>
  <li>I have checked the log on Cloudwatch for scheduler's requirement installation and it says all installed successfully as below:</li>
  </ol>
  <p><code>Successfully installed apache-airflow-providers-microsoft-mssql-1.1.0 apache-airflow-providers-mysql-1.1.0 apache-airflow-providers-oracle-1.1.0 cx-Oracle-8.2.1 mysql-connector-python-8.0.22 mysqlclient-2.0.3 protobuf-3.17.3 pymssql-2.2.1</code></p>
  <ol start="2">
  <li><p>Is it because of MWAA is installed under <em>/usr/local/lib/python3.7/site-packages</em> and python dependencies are installed under <em>~/.local/lib/python3.7/site-packages</em>. How do I specify the directory for packages installation.</p>
  </li>
  <li><p>Or is that Web Server did not restart after dependencies are installed. Thus, Web UI did not reflect new installed packages? How do I restart Web Server if this is the case?</p>
  </li>
  </ol>
  <p><strong>[UPDATE]</strong></p>
  <p>I have tried to recreate the environment and specify the requirements file from the beginning. The connections are still not showing in the drop down list on Web UI.</p>