test: add e2e tests (#21)

* test: add e2e tests

Spin up GCP resources for testing dynamic host catalogs. The resources are tested with tests that focus on credential changes and rotation for host catalog and host set creation and updates using labels.

- The tests all depend on each other so they need to run in order. - The test can also only be executed locally for now.
- The resources are cleaned up after the test as part of the test.

go.mod

@@ -8,6 +8,7 @@ require (
 	github.com/google/go-cmp v0.6.0
 	github.com/googleapis/gax-go/v2 v2.13.0
 	github.com/hashicorp/boundary/sdk v0.0.47
+	github.com/hashicorp/terraform-json v0.23.0
 	golang.org/x/oauth2 v0.22.0
 	google.golang.org/api v0.196.0
 )
@@ -18,12 +19,15 @@ require (
 	cloud.google.com/go/auth/oauth2adapt v0.2.4 // indirect
 	cloud.google.com/go/compute/metadata v0.5.0 // indirect
 	cloud.google.com/go/longrunning v0.6.0 // indirect
+	github.com/apparentlymart/go-textseg/v15 v15.0.0 // indirect
 	github.com/felixge/httpsnoop v1.0.4 // indirect
 	github.com/go-logr/logr v1.4.2 // indirect
 	github.com/go-logr/stdr v1.2.2 // indirect
 	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect
 	github.com/google/s2a-go v0.1.8 // indirect
 	github.com/googleapis/enterprise-certificate-proxy v0.3.3 // indirect
+	github.com/hashicorp/go-version v1.7.0 // indirect
+	github.com/zclconf/go-cty v1.15.0 // indirect
 	go.opencensus.io v0.24.0 // indirect
 	go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc v0.54.0 // indirect
 	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.54.0 // indirect