How to configure camel-http component to use TLSv1.2 for outbound call

Issue

I am trying to use the JSSE utility to configure camel-http component to use TLSv1.2 for outbound call. I have configured the following in my camel blueprint xml file:

<camel:sslContextParameters id="mySslContext">
    <camel:clientParameters>
        <camel:secureSocketProtocols>
            <camel:secureSocketProtocol>TLSv1.2</camel:secureSocketProtocol>
        </camel:secureSocketProtocols>
    </camel:clientParameters>
</camel:sslContextParameters>

However, outbound call still uses default TLSv1.1 instead.

If I change it to use camel-jetty component instead, the outbound call does use TLSv1.2:

<to uri="jetty:{{outboundURL}}?sslContextParametersRef=mySslContext&amp;throwExceptionOnFailure=false&amp;httpClient.soTimeout={{httpTimeout}}" /> 

How do I configure camel-http component to use TLSv1.2 for outbound call?