Require ansible-core for the tests subpackage

ansible-packaging.spec

@@ -38,6 +38,8 @@ Summary:        SRPM stage RPM packaging macros for Ansible collections
 %package tests
 Summary:        Dependencies for Ansible collection package unit tests
 Requires:       %{name} = %{version}-%{release}
+# Unit tests use ansible-core not ansible 2.9.
+Requires:       ansible-core
 Requires:       /usr/bin/ansible-test
 # This list is taken from %%{python3_sitelib}/ansible_test/_data/requirements/units.txt
 Requires:       %{py3_dist pytest}