Creating a Neutron port with port-security-enabled as false creates a port with port-security enabled by default

When user creates a port with "port_security_enabled=false", Port security is seen as true in ODL.Packet capture shows that Openstack is sending it as "false" but in neutron it shows true.

Steps :
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1. Create a port with port_security_enable=false
2. Get the port details in ODL -APIDOC
3. Check for the port uuid and " port_security_enabled" status
4. Port security is getting set to true.