tests: Add test suite common resource labels and fix dnsrecord cleanup

[mikenairn]

tests: Add common label to all test suite resources

All resources created with the common helpers in the integration test suite have a common label added to more easily find resources created by the test suite:

kubectl get ns,gatewayclass,gateway,dnspolicy -l app.kubernetes.io/part-of=kuadrant-test-suite -A
NAME                             STATUS        AGE
namespace/test-namespace-4r6cl   Active        0s
namespace/test-namespace-6qmvp   Active        6s
namespace/test-namespace-7pxsm   Terminating   5s
namespace/test-namespace-w25d8   Active        0s
namespace/test-namespace-wv85k   Terminating   1s

NAME                                                              CONTROLLER        ACCEPTED   AGE
gatewayclass.gateway.networking.k8s.io/gwc-test-namespace-4r6cl   kuadrant.io/bar   Unknown    0s
gatewayclass.gateway.networking.k8s.io/gwc-test-namespace-6qmvp   kuadrant.io/bar   Unknown    6s
gatewayclass.gateway.networking.k8s.io/gwc-test-namespace-w25d8   kuadrant.io/bar   Unknown    0s

NAMESPACE              NAME                                                    CLASS                      ADDRESS     PROGRAMMED   AGE
test-namespace-4r6cl   gateway.gateway.networking.k8s.io/test-gateway1         gwc-test-namespace-4r6cl   172.0.0.1   Unknown      0s
test-namespace-4r6cl   gateway.gateway.networking.k8s.io/test-gateway2         gwc-test-namespace-4r6cl   172.0.0.1   Unknown      0s
test-namespace-6qmvp   gateway.gateway.networking.k8s.io/test-placed-gateway   gwc-test-namespace-6qmvp   172.0.0.1   Unknown      6s
test-namespace-w25d8   gateway.gateway.networking.k8s.io/test-placed-gateway   gwc-test-namespace-w25d8   172.0.0.1   Unknown      0s

NAMESPACE              NAME                                     AGE
test-namespace-4r6cl   dnspolicy.kuadrant.io/test-dns-policy1   0s
test-namespace-4r6cl   dnspolicy.kuadrant.io/test-dns-policy2   0s
test-namespace-6qmvp   dnspolicy.kuadrant.io/test-dns-policy    6s
test-namespace-w25d8   dnspolicy.kuadrant.io/test-dns-policy    0s

tests: Allow overriding packages for integration test

Adds a new variable INTEGRATION_TEST_PACKAGES which sets the packages used by the test-integration make target allowing it to be more easily modified for local development testing.

Example:

INTEGRATION_TEST_PACKAGES=tests/common/dnspolicy/... INTEGRATION_TESTS_EXTRA_ARGS='-v --repeat=4 --focus="valid target"' INTEGRATION_TEST_NUM_PROCESSES=4 INTEGRATION_TEST_NUM_CORES=2 make test-integration

tests: Ensure all dnsrecords are removed in cleanup

Ensures all DNSrecord resources in the current spec test namespace are marked for deletion and removed before removing the secret.

[KevFan]

Looks good to me 👍