Drop install_command usage in tox

Use the default value provided by tox:

https://tox.readthedocs.io/en/latest/config.html#conf-install_command

See discussion on the openstack-discuss ML [1]
for the complete context.

To get this fix in, we'll need to raise
a few requirements:

- eventlet because of the ssl issues with python3.6 in
  older packages
  (https://github.com/eventlet/eventlet/issues/371)
- oslo.messaging to fix the error "ACCESS_REFUSED - Login
  was refused using authentication mechanism AMQPLAIN.".
- psycopg2-binary since 2.6.2 is blacklisted
- oslo.service was bumped to 2.1.0, to pick up its support
  for eventlet>=0.22
- oslo.utils was bumped to match the lower constraint from
  oslo.service at 2.1.0

[1] http://lists.openstack.org/pipermail/openstack-discuss/2020-April/014237.html

Change-Id: I6344f44fb955d631a4f0a13fa53ecc19826c7ea6
Signed-off-by: Goutham Pacha Ravi <gouthampravi@gmail.com>

lower-constraints.txt

@@ -23,7 +23,7 @@ docutils==0.14
 dogpile.cache==0.6.5
 dulwich==0.19.0
 enum-compat==0.0.2
-eventlet==0.18.2
+eventlet==0.22.0
 extras==1.0.0
 fasteners==0.14.1
 fixtures==3.0.0
@@ -66,15 +66,15 @@ oslo.context==2.19.2
 oslo.db==4.27.0
 oslo.i18n==3.15.3
 oslo.log==3.36.0
-oslo.messaging==5.29.0
+oslo.messaging==6.4.0
 oslo.middleware==3.31.0
 oslo.policy==1.30.0
 oslo.reports==1.18.0
 oslo.rootwrap==5.8.0
 oslo.serialization==2.18.0
-oslo.service==1.24.0
+oslo.service==2.1.1
 oslo.upgradecheck==0.1.0
-oslo.utils==3.33.0
+oslo.utils==3.40.2
 oslotest==3.2.0
 packaging==17.1
 paramiko==2.0.0
@@ -85,7 +85,7 @@ pika==0.10.0
 pika-pool==0.1.3
 prettytable==0.7.2
 psutil==5.4.3
-psycopg2-binary==2.6.2
+psycopg2-binary==2.8.5
 pyasn1==0.4.2
 pycadf==2.7.0
 pycparser==2.18

requirements.txt

@@ -7,7 +7,7 @@ pbr!=2.1.0,>=2.0.0 # Apache-2.0
 
 alembic>=0.8.10 # MIT
 Babel!=2.4.0,>=2.3.4 # BSD
-eventlet!=0.18.3,!=0.20.1,>=0.18.2 # MIT
+eventlet>=0.22.0,!=0.23.0,!=0.25.0 # MIT
 greenlet>=0.4.10 # MIT
 lxml!=3.7.0,>=3.4.1 # BSD
 netaddr>=0.7.18 # BSD
@@ -16,15 +16,15 @@ oslo.context>=2.19.2 # Apache-2.0
 oslo.db>=4.27.0 # Apache-2.0
 oslo.i18n>=3.15.3 # Apache-2.0
 oslo.log>=3.36.0 # Apache-2.0
-oslo.messaging>=5.29.0 # Apache-2.0
+oslo.messaging>=6.4.0 # Apache-2.0
 oslo.middleware>=3.31.0 # Apache-2.0
 oslo.policy>=1.30.0 # Apache-2.0
 oslo.reports>=1.18.0 # Apache-2.0
 oslo.rootwrap>=5.8.0 # Apache-2.0
 oslo.serialization!=2.19.1,>=2.18.0 # Apache-2.0
-oslo.service!=1.28.1,>=1.24.0 # Apache-2.0
+oslo.service>=2.1.1 # Apache-2.0
 oslo.upgradecheck>=0.1.0 # Apache-2.0
-oslo.utils>=3.33.0 # Apache-2.0
+oslo.utils>=3.40.2 # Apache-2.0
 oslo.concurrency>=3.26.0 # Apache-2.0
 paramiko>=2.0.0 # LGPLv2.1+
 Paste>=2.0.2 # MIT

test-requirements.txt

@@ -16,7 +16,7 @@ oslotest>=3.2.0 # Apache-2.0
 # by oslo_db lib for running MySQL and PostgreSQL DB migration tests.
 # See https://docs.openstack.org/oslo.db/latest/contributor/index.html#how-to-run-unit-tests
 PyMySQL>=0.7.6 # MIT License
-psycopg2-binary>=2.6.2 # LGPL/ZPL
+psycopg2-binary>=2.8.5 # LGPL/ZPL
 
 requests-mock>=1.2.0 # Apache-2.0
 os-api-ref>=1.4.0 # Apache-2.0

tox.ini

@@ -7,10 +7,11 @@ envlist = py3,pep8
 basepython = python3
 setenv = VIRTUAL_ENV={envdir}
 usedevelop = True
-install_command = pip install -c{env:UPPER_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/master} {opts} {packages}
 whitelist_externals = find
-deps = -r{toxinidir}/requirements.txt
-       -r{toxinidir}/test-requirements.txt
+deps =
+  -c{env:UPPER_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/master}
+  -r{toxinidir}/requirements.txt
+  -r{toxinidir}/test-requirements.txt
 commands =
   find . -type f -name "*.py[c|o]" -delete
   stestr run {posargs}