devel/py-oslo.service 4.8.0

Switch all pypi.python.org WWWs to a new PyPi home pypi.org where they now redirect to anyway. All new urls checked to return 200, I've fixed a couple of them in the process.

Approved by:	portmgr blanket, mat

Update to 1.31.1

Changes:	https://docs.openstack.org/oslo.service/latest/user/history.html

Update to 1.31.0

Changes:	https://docs.openstack.org/oslo.service/latest/user/history.html

Update to 1.30.0

- Add LICENSE
- Sort RUN_DEPENDS
- Allow concurrent installation (USE_PYTHON=concurrent)
- Request maintainership

Changes:	https://docs.openstack.org/oslo.service/latest/user/history.html
PR:		226768
Submitted by:	sunpoet (myself)
Approved by:	Alexander Nusov <alexander.nusov@nfvexpress.com> (maintainer)

Convert Python ports to FLAVORS.

Ports using USE_PYTHON=distutils are now flavored.  They will
  automatically get flavors (py27, py34, py35, py36) depending on what
  versions they support.

  There is also a USE_PYTHON=flavors for ports that do not use distutils
  but need FLAVORS to be set.  A USE_PYTHON=noflavors can be set if
  using distutils but flavors are not wanted.

  A new USE_PYTHON=optsuffix that will add PYTHON_PKGNAMESUFFIX has been
  added to cope with Python ports that did not have the Python
  PKGNAMEPREFIX but are flavored.

  USES=python now also exports a PY_FLAVOR variable that contains the
  current python flavor.  It can be used in dependency lines when the
  port itself is not python flavored.  For example, deskutils/calibre.

  By default, all the flavors are generated.  To only generate flavors
  for the versions in PYTHON2_DEFAULT and PYTHON3_DEFAULT, define
  BUILD_DEFAULT_PYTHON_FLAVORS in your make.conf.

  In all the ports with Python dependencies, the *_DEPENDS entries MUST
  end with the flavor so that the framework knows which to build/use.
  This is done by appending '@${PY_FLAVOR}' after the origin (or
  @${FLAVOR} if in a Python module with Python flavors, as the content
  will be the same).  For example:

    RUN_DEPENDS= ${PYTHON_PKGNAMEPREFIX}six>0:devel/py-six@${PY_FLAVOR}

PR:		223071
Reviewed by:	portmgr, python
Sponsored by:	Absolight
Differential Revision:	https://reviews.freebsd.org/D12464

devel/py-oslo.service: update to 1.19.0

PR:		216448
Submitted by:	maintainer

devel/py-oslo.service: update to 1.17.0

Also, specify LICENSE and update RUN_DEPENDS.

PR:		214741
Submitted by:	maintainer

Add py-oslo.service 1.16.0, oslo.service library.

PR:		213542
Submitted by:	Alexander Nusov <alexander.nusov@nfvexpress.com>