midonet_lib.py contains a typo'd format parameter

[Angus Lees]

In add_static_nat(...):

        LOG.debug("MidoClient.add_static_nat called: "
                  "tenant_id=%(tenant_id)s, chain_name=%(chain_name)s, "
                  "from_ip=%(from_ip)s, to_ip=%(to_ip)s, "
                  "port_id=%(port_id)s, nat_type=%(nat_type)s",
                  {'tenant_id': tenant_id, 'chain_name': chain_name,
                   'from_ip': from_ip, 'to_ip': to_ip,
                   'portid': port_id, 'nat_type': nat_type})

Note port_id vs portid. This line of code will raise a KeyError if debug logging is enabled.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/143334

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/143334
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=a9571b5d8ecc2db8f2d0808eb444bab4baf348c3
Submitter: Jenkins
Branch: master

commit a9571b5d8ecc2db8f2d0808eb444bab4baf348c3
Author: Angus Lees <email address hidden>
Date: Mon Dec 22 10:25:58 2014 +1100

    Fix typo'd format parameter in midonet_lib.py

    In add_static_nat(...):

            LOG.debug("MidoClient.add_static_nat called: "
                      "tenant_id=%(tenant_id)s, chain_name=%(chain_name)s, "
                      "from_ip=%(from_ip)s, to_ip=%(to_ip)s, "
                      "port_id=%(port_id)s, nat_type=%(nat_type)s",
                      {'tenant_id': tenant_id, 'chain_name': chain_name,
                       'from_ip': from_ip, 'to_ip': to_ip,
                       'portid': port_id, 'nat_type': nat_type})

    Note port_id vs portid. This line of code raises a KeyError if debug
    logging is enabled.

    (Found via pylint)

    Change-Id: I4d76255a559489f2f0e074b4489cfa5f33f1dddf
    Closes-Bug: #1404755