Avoid tox_install.sh for constraints support

We do not need tox_install.sh, pip can handle constraints itself
and install the project correctly. Thus update tox.ini and remove
the now obsolete tools/tox_install.sh file.

This follows https://review.openstack.org/#/c/508061 to remove
tools/tox_install.sh.

Fixes requirements install failure with stable jobs.

Change-Id: Ie2bf2618c8e202653a45cde195bd395ab7058dc1
(cherry picked from commit f999996e)

setup.cfg

@@ -26,11 +26,6 @@ packages =
 oslo.config.opts =
     oslo.versionedobjects = oslo_versionedobjects._options:list_opts
 
-[extras]
-fixtures =
-  mock>=2.0 # BSD
-  fixtures>=3.0.0 # Apache-2.0/BSD
-
 [build_sphinx]
 source-dir = doc/source
 build-dir = doc/build

test-requirements.txt

@@ -11,3 +11,6 @@ sphinx>=1.6.2 # BSD
 coverage!=4.4,>=4.0 # Apache-2.0
 jsonschema!=2.5.0,<3.0.0,>=2.0.0 # MIT
 reno!=2.3.1,>=1.8.0 # Apache-2.0
+
+mock>=2.0 # BSD
+fixtures>=3.0.0 # Apache-2.0/BSD

tools/tox_install.sh

-#!/usr/bin/env bash
-
-# Client constraint file contains this client version pin that is in conflict
-# with installing the client from source. We should remove the version pin in
-# the constraints file before applying it for from-source installation.
-
-CONSTRAINTS_FILE=$1
-shift 1
-
-set -e
-
-# NOTE(tonyb): Place this in the tox enviroment's log dir so it will get
-# published to logs.openstack.org for easy debugging.
-localfile="$VIRTUAL_ENV/log/upper-constraints.txt"
-
-if [[ $CONSTRAINTS_FILE != http* ]]; then
-    CONSTRAINTS_FILE=file://$CONSTRAINTS_FILE
-fi
-# NOTE(tonyb): need to add curl to bindep.txt if the project supports bindep
-curl $CONSTRAINTS_FILE --insecure --progress-bar --output $localfile
-
-pip install -c$localfile openstack-requirements
-
-# This is the main purpose of the script: Allow local installation of
-# the current repo. It is listed in constraints file and thus any
-# install will be constrained and we need to unconstrain it.
-edit-constraints $localfile -- $CLIENT_NAME
-
-pip install -c$localfile -U $*
-exit $?

tox.ini

@@ -6,10 +6,10 @@ envlist = py35,py27,pypy,pep8
 setenv =
     VIRTUAL_ENV={envdir}
     BRANCH_NAME=master
-    CLIENT_NAME=oslo.versionedobjects
-install_command = {toxinidir}/tools/tox_install.sh {env:UPPER_CONSTRAINTS_FILE:https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt?h=stable/pike} {opts} {packages}
-deps = .[fixtures]
-       -r{toxinidir}/test-requirements.txt
+install_command = pip install {opts} {packages}
+deps =
+  -c{env:UPPER_CONSTRAINTS_FILE:https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt}
+  -r{toxinidir}/test-requirements.txt
 commands = python setup.py testr --slowest --testr-args='{posargs}'
 
 [testenv:pep8]