Avoid tox_install.sh for constraints support

Follow https://review.openstack.org/#/c/508061 to remove
tools/tox_install.sh, we can build without it.

Change-Id: Ia27fb4f8a4da8d5ae2755b54c3274402362ae521

tools/tox_install.sh

@@ -1,30 +0,0 @@
-#!/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

@@ -5,13 +5,11 @@ skipsdist = True
 
 [testenv]
 usedevelop = True
-install_command = {toxinidir}/tools/tox_install.sh {env:UPPER_CONSTRAINTS_FILE:https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt} {opts} {packages}
-setenv =
-   VIRTUAL_ENV={envdir}
-   CLIENT_NAME=openstack-doc-tools
+install_command = pip install {opts} {packages}
 # Install also sitemap scraping tool, not installed by default
 # therefore not in requirements file
 deps = scrapy>=1.0.0
+       -c{env:UPPER_CONSTRAINTS_FILE:https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt}
        -r{toxinidir}/test-requirements.txt
        -r{toxinidir}/requirements.txt
 commands = python setup.py testr --slowest --testr-args='{posargs}'