Run tosca-parser tests with Python 3.10

... because Python 3.7 is no longer tested. Python 3.10 is selected
from the supported runtime versions because it's the default python
version in Ubuntu Jammy.

This also fixes a few problems causing failure in the test.

Change-Id: Ida855a8438fe980998240c5f09cf7826b9ca78dc

.zuul.yaml

@@ -10,11 +10,11 @@
             voting: false
 
 - job:
-    name: heat-translator-tox-py37-tp
-    parent: openstack-tox-py37
+    name: heat-translator-tox-py310-tp
+    parent: openstack-tox-py310
     description: |
       Run tests for heat-translator project.
 
-      Uses tox with the ``py37-tp`` environment.
+      Uses tox with the ``py310-tp`` environment.
     vars:
-      tox_envlist: py37-tp
+      tox_envlist: py310-tp

test-requirements.txt

@@ -9,3 +9,6 @@ python-subunit>=1.0.0 # Apache-2.0/BSD
 testrepository>=0.0.18 # Apache-2.0/BSD
 testscenarios>=0.4 # Apache-2.0/BSD
 testtools>=2.2.0 # MIT
+# TODO(tkajinam): Remove this once this is added to the dependencies of
+#                 testrepository
+extras # MIT

tox.ini

@@ -43,10 +43,12 @@ commands =
     oslo_debug_helper -t translator/hot/tests {posargs}
     oslo_debug_helper -t translator/hot/tosca/tests {posargs}
 
-[testenv:py37-tp]
-basepython = python37
+[testenv:py310-tp]
+basepython = python310
+allowlist_externals =
+    bash
 commands =
-    ./run_py-tosca-parser-master.sh
+    bash ./run_py-tosca-parser-master.sh
     python setup.py test --slowest --testr-args='{posargs}'
 
 [flake8]