in
the namespace of the proxy using the certificates.
An Opaque secret should contain the following keys and values:
<code>key: &lt;privateKey&gt;</code>, <code>cert: &lt;clientCert&gt;</code>, <code>cacert: &lt;CACertificate&gt;</code>,
<code>crl: &lt;certificateRevocationList&gt;</code>
Here CACertificate is used to verify the server certificate.
For mutual TLS, <code>cacert: &lt;CACertificate&gt;</code> can be provided in the
same secret or a separate secret named <code>&lt;secret&gt;-cacert</code>.
A TL