Add smoke tests and enable gating

Add very basic smoke tests that check if the container module installed
successfully and that it is still possible to rebuild the policy after
installing the package.

This, along with enabling rawhide gating [1], should help catch issues
like [2] and prevent a broken build from getting into Rawhide composes.

[1] https://docs.fedoraproject.org/en-US/rawhide-gating/
[2] https://github.com/containers/container-selinux/pull/84

Signed-off-by: Ondrej Mosnacek <omosnace@redhat.com>

gating.yaml

@@ -0,0 +1,6 @@
+--- !Policy
+product_versions:
+  - fedora-*
+decision_context: bodhi_update_push_stable
+rules:
+  - !PassingTestCaseRule {test_case_name: org.centos.prod.ci.pipeline.allpackages-build.complete}

tests/tests.yml

@@ -0,0 +1,13 @@
+- hosts: localhost
+  tags:
+  - classic
+  roles:
+  - role: standard-test-basic
+    required_packages:
+    - policycoreutils
+    - container-selinux
+    tests:
+    - is-module-installed:
+        run: semodule --list=full | grep container
+    - can-rebuild-policy:
+        run: semodule -B