Reference the JDK cacerts as a trustore manager which consist of the CA certificate for the SSL certificate. Also, add the keystore which consist of the SSL certifcate as below.
<http-conf:conduit name="*.http-conduit">
<http-conf:tlsClientParameters>
<sec:keyManagers keyPassword="testkey">
<sec:keyStore type="JKS" password="changeit"
file="<keystore path>" />
</sec:keyManagers>
<sec:trustManagers>
<sec:keyStore type="JKS" password="changeit"
file="<cacert path>" />
</sec:trustManagers>
</http-conf:tlsClientParameters>
<http-conf:client AutoRedirect="true" Connection="Keep-Alive" />
</http-conf:conduit>