scripts/network/juniper/security-policy-rename.xml

<rpc>
<load-configuration>
<configuration>
<security>
<policies>
<policy>
<from-zone-name>%from-zone%</from-zone-name>
<to-zone-name>%to-zone%</to-zone-name>
<policy rename="rename" name="%new-policy-name%">
<name>%policy-name%</name>
</policy>
</policy>
</policies>
</security>
</configuration>
</load-configuration>
</rpc>