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.

Change-Id: Ieec1e7c7a4ae9a89fb413e4aa5288396690ed538

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

@@ -5,12 +5,10 @@ skipsdist = True
 
 [testenv]
 usedevelop = True
-setenv =
-    VIRTUAL_ENV={envdir}
-    BRANCH_NAME=master
-    CLIENT_NAME=diskimage-builder
-install_command = {toxinidir}/tools/tox_install.sh {env:UPPER_CONSTRAINTS_FILE:https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt} {opts} {packages}
-deps= -r{toxinidir}/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}/requirements.txt
       -r{toxinidir}/test-requirements.txt
 commands=
     python setup.py test --slowest --testr-args='{posargs}'
@@ -33,8 +31,6 @@ envdir = {toxworkdir}/venv
 commands = {toxinidir}/tests/run_functests.sh {posargs}
 
 [testenv:cover]
-setenv =
-    {[testenv]setenv}
 # NOTE: this is "setup.py test" (*not* testr) which is a pbr wrapper
 # around testr.  This understands --coverage-package-name which we
 # need due to underscore issues.