WIP: Remove py2 and modernize

The gate is currently broken for this package, that is using very old
requirements and py2. This is an attempt to repair things, even though
SQLAlchemy-migrate is heading for EOL.

This patch:
- removes py2 tests from tox.ini.
- removes sphinx<1.2 constraint.
- fixes doc/source/conf.py regarding ur'strings'.
- removes openstack-python-jobs and sqlalchemy-migrate-tox-py27sa07
from gating.

Change-Id: I595a602ca7272e9d4f4461ac1f4d6b010b5087a5

.zuul.yaml

@@ -1,14 +1,12 @@
 - project:
     templates:
       - docs-on-readthedocs
-      - openstack-python-jobs
       - openstack-python35-jobs
       - openstack-python36-jobs
     vars:
       rtd_webhook_id: '61274'
     check:
       jobs:
-        - sqlalchemy-migrate-tox-py27sa07
         - sqlalchemy-migrate-devstack:
             voting: false
     gate:

doc/source/conf.py

@@ -182,8 +182,8 @@ htmlhelp_basename = 'SQLAlchemyMigratedoc'
 # Grouping the document tree into LaTeX files. List of tuples
 # (source start file, target name, title, author, document class [howto/manual]).
 latex_documents = [
-  ('index', 'SQLAlchemyMigrate.tex', ur'SQLAlchemy Migrate Documentation',
-   ur'Evan Rosson, Jan Dittberner, Domen Kožar', 'manual'),
+  ('index', 'SQLAlchemyMigrate.tex', 'SQLAlchemy Migrate Documentation',
+   'Evan Rosson, Jan Dittberner, Domen Kožar', 'manual'),
 ]
 
 # The name of an image file (relative to this directory) to place at the top of

setup.cfg

@@ -13,8 +13,6 @@ classifier =
     License :: OSI Approved :: Apache Software License
     Operating System :: POSIX :: Linux
     Programming Language :: Python
-    Programming Language :: Python :: 2
-    Programming Language :: Python :: 2.7
     Programming Language :: Python :: 3
     Programming Language :: Python :: 3.3
     Programming Language :: Python :: 3.4

test-requirements.txt

@@ -13,7 +13,7 @@ mox>=0.5.3
 mysqlclient
 psycopg2
 python-subunit>=0.0.18
-sphinx>=1.1.2,<1.2
+sphinx>=1.1.2
 sphinxcontrib_issuetracker
 testrepository>=0.0.17
 testtools>=0.9.34,<0.9.36

tox.ini

@@ -1,7 +1,7 @@
 [tox]
 minversion = 1.6
 skipsdist = True
-envlist = py27,py27sa07,py27sa08,py27sa09,py33,py34,py35,py36,pep8
+envlist = py33,py34,py35,py36,pep8
 
 [testenv]
 usedevelop = True
@@ -13,25 +13,6 @@ deps = -r{toxinidir}/requirements.txt
        -r{toxinidir}/test-requirements.txt
 commands = bash tools/pretty_tox.sh '{posargs}'
 
-[testenv:py27]
-deps = sqlalchemy>=0.9
-       -r{toxinidir}/test-requirements.txt
-
-[testenv:py27sa07]
-basepython = python2.7
-deps = sqlalchemy>=0.7,<=0.7.99
-       -r{toxinidir}/test-requirements.txt
-
-[testenv:py27sa08]
-basepython = python2.7
-deps = sqlalchemy>=0.8,<=0.8.99
-       -r{toxinidir}/test-requirements.txt
-
-[testenv:py27sa09]
-basepython = python2.7
-deps = sqlalchemy>=0.9,<=0.9.99
-       -r{toxinidir}/test-requirements.txt
-
 [testenv:py33]
 deps = sqlalchemy>=0.9
        -r{toxinidir}/test-requirements.txt