revert client side cert url change back to original

Author: oboehmer

atests/test_ssl_certs.robot

@@ -18,6 +18,6 @@ Get HTTPS & Verify Cert with a CA bundle
 Get HTTPS with Client Side Certificates
     [Tags]    get    get-cert
     @{client_certs}=    Create List    ${CURDIR}${/}clientcert.pem    ${CURDIR}${/}clientkey.pem
-    Create Client Cert Session    sslsession    https://github.com    client_certs=@{client_certs}
+    Create Client Cert Session    sslsession    https://server.cryptomix.com/secure    client_certs=@{client_certs}
     ${resp}=    GET On Session    sslsession    /
     Should Be Equal As Strings    ${resp.status_code}    200