graduate oslo.serialization

A few changes we need to land before releasing:

docstrings: https://review.openstack.org/113356
doc build: https://review.openstack.org/113351
use oslo.utils and oslo.i18n: https://review.openstack.org/113347

Gerrit topic: https://review.openstack.org/#q,topic:bp/graduate-oslo-serialization,n,z

Addressed by: https://review.openstack.org/117236
    Mark jsonutils as graduating

Addressed by: https://review.openstack.org/117237
    Remove mock test dependency

Addressed by: https://review.openstack.org/117241
    Update list of oslo libs in update.py

Work items:
Create Initial Repository: DONE
Update MAINTAINERS in incubator with status and name: DONE
Remove Oslo logging calls in incubator: DONE
Run graduate.sh: DONE
Fix the output of graduate.sh: DONE
Use cookiecutter template to make a new project: DONE
Sync tools from incubator: DONE
Publish git repo: DONE
Oslo team review new repository: DONE
openstack-infra/config - modules/openstack_project/files/review.projects.yaml: DONE
openstack-infra/config - modules/openstack_project/files/gerrit/acls/stackforge/project-name.config: DONE
openstack-infra/config - modules/openstack_project/files/jenkins_job_builder/config/projects.yaml: DONE
openstack-infra/config - modules/openstack_project/files/zuul/layout.yaml: DONE
openstack-infra/config - modules/gerritbot/files/gerritbot_channel_config.yaml: DONE
Update Gerrit Groups and ACLs: DONE
openstack-infra/devstack-gate - devstack-vm-gate-wrap.sh: DONE
openstack/requirements projects.txt: DONE
openstack/governance reference/programs.yaml: DONE
Update list of libraries on Oslo wiki page: DONE
Update .gitreview in new repository: DONE
Make the library do something: DONE
Switch from incubator modules to libs: DONE
Give openstackci Owner permissions on PyPI: DONE
Tag a release - 0.1.0: DONE
Mark graduated code obsolete in oslo-incubator - https://review.openstack.org/117236: DONE
Update oslo-incubator/update.py to not rewrite references to the library -https://review.openstack.org/117241: DONE
openstack/requirements - global-requirements.txt - https://review.openstack.org/117239: DONE
Document Migration Process: TODO
Add to devstack-gate - https://review.openstack.org/#/c/117307/: DONE
openstack-dev/devstack - lib/oslo & stackrc - https://review.openstack.org/117244: DONE
openstack-infra/config - modules/openstack_project/files/jenkins_job_builder/config/oslo.yaml: TODO
Update project list on docs.openstack.org: TODO