Fix openstack-tox jobs for ha repo

The Zuul upper-constraints env variable declaration needed
to be added to tox.ini otherwise an older constraints
was being used which does not work with newer
versions of python.

Needed to suppress bugbear error B009 also, due to newer
version of flake8-bugbear.

Partial-Bug: #1997255

Signed-off-by: Al Bailey <al.bailey@windriver.com>
Change-Id: I73f4fbbf51a09f1e4c1a633a7a8b62cf969ff33a

tox.ini

@@ -5,7 +5,7 @@ skipsdist = True
 
 [testenv]
 install_command = pip install \
-    -chttps://opendev.org/openstack/requirements/raw/branch/stable/stein/upper-constraints.txt \
+    -c{env:UPPER_CONSTRAINTS_FILE:https://opendev.org/openstack/requirements/raw/branch/stable/stein/upper-constraints.txt} \
     {opts} {packages}
 setenv = VIRTUAL_ENV={envdir}
          OS_STDOUT_CAPTURE=1
@@ -83,13 +83,14 @@ commands =
 # F901 'raise NotImplemented' should be 'raise NotImplementedError'
 # - bugbear -
 # B008 Do not perform calls in argument defaults. The call is performed only once at function definition time.
+# B009 Do not call getattr with a constant attribute value, it is not any safer than normal property access.
 # B014 Redundant exception types
 ignore= E402,
         H102,H104,H105,H106,H306,H401,H403,H404,H405,H501,
         W504,W605,
         E741,
         F811,F821,F841,F901,
-        B008,B014
+        B008,B009,B014
 # Enable checks which are off by default
 # H106 Don’t put vim configuration in source files (off by default). SHOULD BE ENABLED.
 # H203 Use assertIs(Not)None to check for None (off by default).