Stop configuring install_command in tox.

Currently, we are overriding 'install_command' to use 'pip'. This is
considered poor behavior and 'python -m pip' should be used instead:

https://snarky.ca/why-you-should-use-python-m-pip/

It turns out that this is the the default value provided by tox:

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

So we can remove the line and simply use the default value.

openstack-discuss thread
http://lists.openstack.org/pipermail/openstack-discuss/2020-April/014237.html

Bumping  in requirements:
-alembic to 0.9.6
-keystoneauth1 to 3.18

Bumping libs in  in l-c:
-alembic to 0.9.6
-keystoneauth1 to 3.18
-pika to 0.10.0 (necessary for installation)

Change-Id: I059e841ab891ba0451d0423065e9727c8c77f337

3 files changed, 5 insertions, 5 deletions

diff --git a/lower-constraints.txt b/lower-constraints.txt
index 75b60e8dc..0da593d56 100644
--- a/lower-constraints.txt
+++ b/lower-constraints.txt
@@ -1,4 +1,4 @@
-alembic==0.8.10
+alembic==0.9.6
 automaton==1.9.0
 Babel==2.3.4
 bandit==1.1.0
@@ -16,7 +16,7 @@ iso8601==0.1.11
 Jinja2==2.10
 jsonpatch==1.16
 jsonschema==2.6.0
-keystoneauth1==3.15.0
+keystoneauth1==3.18.0
 keystonemiddleware==4.17.0
 mock==3.0.0
 openstackdocstheme==1.31.2
@@ -43,6 +43,7 @@ oslotest==3.2.0
 osprofiler==1.5.0
 pbr==2.0.0
 pecan==1.0.0
+pika==0.10.0
 psutil==3.2.2
 psycopg2==2.7.3
 Pygments==2.2.0
diff --git a/requirements.txt b/requirements.txt
index bdff31be5..da87b3037 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,14 +3,14 @@
 # process, which may cause wedges in the gate later.
 pbr!=2.1.0,>=2.0.0 # Apache-2.0
 SQLAlchemy!=1.1.5,!=1.1.6,!=1.1.7,!=1.1.8,>=1.0.10 # MIT
-alembic>=0.8.10 # MIT
+alembic>=0.9.6 # MIT
 automaton>=1.9.0 # Apache-2.0
 eventlet!=0.18.3,!=0.20.1,>=0.18.2 # MIT
 WebOb>=1.7.1 # MIT
 python-cinderclient!=4.0.0,>=3.3.0 # Apache-2.0
 python-neutronclient>=6.7.0 # Apache-2.0
 python-glanceclient>=2.8.0 # Apache-2.0
-keystoneauth1>=3.15.0 # Apache-2.0
+keystoneauth1>=3.18.0 # Apache-2.0
 ironic-lib>=2.17.1 # Apache-2.0
 python-swiftclient>=3.2.0 # Apache-2.0
 pytz>=2013.6 # MIT
diff --git a/tox.ini b/tox.ini
index 62fac742e..2ce36f9f5 100644
--- a/tox.ini
+++ b/tox.ini
@@ -6,7 +6,6 @@ ignore_basepython_conflict=true
 
 [testenv]
 usedevelop = True
-install_command = pip install -U {opts} {packages}
 basepython = python3
 setenv = VIRTUAL_ENV={envdir}
          PYTHONDONTWRITEBYTECODE = 1