Rename -ptl groups to -release

The increasingly inaccurately named -ptl groups are causing some
confusion.  Rename them to -release instead to match current usage.

Update docs to match.

Immediately before this change merges, the following commands should
be run:

gerrit rename-group aviator-ptl aviator-release
gerrit rename-group barbican-ptl barbican-release
gerrit rename-group bashate-ptl bashate-release
gerrit rename-group blazar-ptl blazar-release
gerrit rename-group cachemonkey-ptl cachemonkey-release
gerrit rename-group ceilometer-ptl ceilometer-release
gerrit rename-group cinder-ptl cinder-release
gerrit rename-group cliff-ptl cliff-release
gerrit rename-group cli-powershell-ptl cli-powershell-release
gerrit rename-group cloudkitty-ptl cloudkitty-release
gerrit rename-group compass-ptl compass-release
gerrit rename-group congress-ptl congress-release
gerrit rename-group designate-ptl designate-release
gerrit rename-group devstack-ptl devstack-release
gerrit rename-group doc8-ptl doc8-release
gerrit rename-group dotnet-sdk-ptl dotnet-sdk-release
gerrit rename-group driverlog-ptl driverlog-release
gerrit rename-group ec2-api-ptl ec2-api-release
gerrit rename-group elastic-recheck-ptl elastic-recheck-release
gerrit rename-group freezer-ptl freezer-release
gerrit rename-group gerrit-dash-creator-ptl gerrit-dash-creator-release
gerrit rename-group gerrit-powered-agenda-ptl gerrit-powered-agenda-release
gerrit rename-group gertty-ptl gertty-release
gerrit rename-group git-upstream-ptl git-upstream-release
gerrit rename-group glance-ptl glance-release
gerrit rename-group gnocchi-ptl gnocchi-release
gerrit rename-group golang-client-ptl golang-client-release
gerrit rename-group graffiti-ptl graffiti-release
gerrit rename-group grenade-ptl grenade-release
gerrit rename-group groups-static-pages-ptl groups-static-pages-release
gerrit rename-group hacking-ptl hacking-release
gerrit rename-group heat-ptl heat-release
gerrit rename-group heat-translator-ptl heat-translator-release
gerrit rename-group horizon-ptl horizon-release
gerrit rename-group infra-manual-ptl infra-manual-release
gerrit rename-group ironic-ptl ironic-release
gerrit rename-group jenkins-job-builder-ptl jenkins-job-builder-release
gerrit rename-group keystone-ptl keystone-release
gerrit rename-group kickstack-ptl kickstack-release
gerrit rename-group logaas-ptl logaas-release
gerrit rename-group magnetodb-ptl magnetodb-release
gerrit rename-group manila-ptl manila-release
gerrit rename-group monasca-ptl monasca-release
gerrit rename-group neutron-ptl neutron-release
gerrit rename-group nova-ptl nova-release
gerrit rename-group nova-solver-scheduler-ptl nova-solver-scheduler-release
gerrit rename-group octavia-ptl octavia-release
gerrit rename-group olso-messaging-ptl olso-messaging-release
gerrit rename-group openstack-doc-ptl openstack-doc-release
gerrit rename-group openstackdroid-ptl openstackdroid-release
gerrit rename-group openstackid-ptl openstackid-release
gerrit rename-group openstack-training-guides-ptl openstack-training-guides-release
gerrit rename-group oslo-concurrency-ptl oslo-concurrency-release
gerrit rename-group oslo-config-ptl oslo-config-release
gerrit rename-group oslo-db-ptl oslo-db-release
gerrit rename-group oslo-i18n-ptl oslo-i18n-release
gerrit rename-group oslo-middleware-ptl oslo-middleware-release
gerrit rename-group oslo-ptl oslo-release
gerrit rename-group oslo-rootwrap-ptl oslo-rootwrap-release
gerrit rename-group oslo-vmware-ptl oslo-vmware-release
gerrit rename-group ospurge-ptl ospurge-release
gerrit rename-group pbr-ptl pbr-release
gerrit rename-group pecan-ptl pecan-release
gerrit rename-group php-sdk-ptl php-sdk-release
gerrit rename-group poppy-ptl poppy-release
gerrit rename-group powervc-driver-ptl powervc-driver-release
gerrit rename-group puppet-n1k-vsm-ptl puppet-n1k-vsm-release
gerrit rename-group pycadf-ptl pycadf-release
gerrit rename-group python-jenkins-ptl python-jenkins-release
gerrit rename-group python-openstacksdk-ptl python-openstacksdk-release
gerrit rename-group rack-ptl rack-release
gerrit rename-group refstack-ptl refstack-release
gerrit rename-group requests-mock-ptl requests-mock-release
gerrit rename-group rubick-ptl rubick-release
gerrit rename-group sahara-ptl sahara-release
gerrit rename-group satori-ptl satori-release
gerrit rename-group solum-ptl solum-release
gerrit rename-group stacktach-ptl stacktach-release
gerrit rename-group stevedore-ptl stevedore-release
gerrit rename-group subunit2sql-ptl subunit2sql-release
gerrit rename-group swift3-ptl swift3-release
gerrit rename-group swift-ceph-backend-ptl swift-ceph-backend-release
gerrit rename-group swiftpolicy-ptl swiftpolicy-release
gerrit rename-group swift-ptl swift-release
gerrit rename-group tacker-ptl tacker-release
gerrit rename-group taskflow-ptl taskflow-release
gerrit rename-group tempest-ptl tempest-release
gerrit rename-group tripleo-ptl tripleo-release
gerrit rename-group trove-ptl trove-release
gerrit rename-group tuskar-ui-extras-ptl tuskar-ui-extras-release
gerrit rename-group vinz-ptl vinz-release
gerrit rename-group warm-ptl warm-release
gerrit rename-group wsme-ptl wsme-release
gerrit rename-group xenapi-os-testing-ptl xenapi-os-testing-release
gerrit rename-group xstatic-ptl xstatic-release
gerrit rename-group zaqar-ptl zaqar-release

Change-Id: Idf4ee7a1b437c1cf93f89140b5133b6804d0a4e1