Rename bootstrap-os to bootstrap_os

Role names in ansible collections should not have hyphens.

roles/bootstrap_os/molecule/default/tests/test_default.py

@@ -0,0 +1,11 @@
+import os
+
+import testinfra.utils.ansible_runner
+
+testinfra_hosts = testinfra.utils.ansible_runner.AnsibleRunner(
+    os.environ['MOLECULE_INVENTORY_FILE']
+).get_hosts('all')
+
+
+def test_python(host):
+    assert host.exists('python3') or host.exists('python')