add GET (show) in OS API keypairs extension

[Tom Fifield]

From https://review.openstack.org/#/c/11416/

DocImpact - need to add documentation for GET on: v2/{tenant_id}/os-keypairs/{keypair_name}

found in doc/src/docbkx/openstack-api-site/src/wadls/compute-api/src/ext/os-keypairs.wadl

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/12550

[Tom Fifield (fifieldt)]

https://review.openstack.org/#/c/12550/

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/12550
Committed: http://github.com/openstack/openstack-manuals/commit/9402bee1cd22cadf2f51f15a7f0b43022ca4ce66
Submitter: Jenkins
Branch: master

commit 9402bee1cd22cadf2f51f15a7f0b43022ca4ce66
Author: Tom Fifield <email address hidden>
Date: Fri Sep 7 15:52:57 2012 +1000

    add GET (show) to OS API keypairs extension docs

    fixes bug 1038346

    As per the bug report, the API docs was missing the
    GET (show) in the keypairs extension. This patch adds it
    and provides a simple example

    Change-Id: If7bee1a7ebf9aaa5ab6d20b67b6234248ba49e27