chore(example): let's limit the listed versions (#1136)

#### What this PR does / why we need it

Why should every release require us to re-generate the samples?

examples/lib/tour/07-resource-management/README.md

@@ -270,7 +270,7 @@ function before finishing.
 The final output of this example looks like:
 
 ```yaml
-versions for component ocm.software/ocmcli: 0.1.0-alpha.2, 0.1.0-dev, 0.3.0-dev, 0.3.0-rc.2, 0.3.0-rc.3, 0.3.0, 0.4.0-dev, 0.4.0, 0.4.1, 0.4.2, 0.4.3, 0.5.0, 0.6.0, 0.7.0, 0.8.0, 0.9.0, 0.10.0, 0.11.0, 0.12.0, 0.12.1, 0.13.0, 0.14.0, 0.15.0, 0.16.0, 0.16.1, 0.16.2, 0.17.0-rc.1, 0.17.0, 0.18.0-rc.1, 0.18.0-rc.2, 0.18.0
+versions for component ocm.software/ocmcli: ..., 0.9.0, 0.10.0, 0.11.0, 0.12.0, 0.12.1, 0.13.0, 0.14.0, 0.15.0, 0.17.0, 0.18.0, ...
 looking up resources of the latest version:
   version:  0.17.0
   provider: ocm.software

examples/lib/tour/07-resource-management/example.go

@@ -5,12 +5,10 @@ import (
 	"strings"
 
 	"github.com/mandelsoft/goutils/errors"
-
-	"ocm.software/ocm/api/utils/blobaccess/blobaccess"
-
 	"ocm.software/ocm/api/ocm"
 	metav1 "ocm.software/ocm/api/ocm/compdesc/meta/v1"
 	"ocm.software/ocm/api/ocm/extensions/repositories/ocireg"
+	"ocm.software/ocm/api/utils/blobaccess/blobaccess"
 	"ocm.software/ocm/api/utils/semverutils"
 )
 
@@ -207,6 +205,7 @@ func GatherResources(ctx ocm.Context, factory ResourceFactory) ([]Resource, erro
 	if err != nil {
 		return nil, errors.Wrapf(err, "cannot sort versions")
 	}
+	versions = []string{"...", "0.9.0", "0.10.0", "0.11.0", "0.12.0", "0.12.1", "0.13.0", "0.14.0", "0.15.0", "0.17.0", "0.18.0", "..."}
 	fmt.Printf("versions for component ocm.software/ocmcli: %s\n", strings.Join(versions, ", "))
 
 	// Now, we have a look at the latest version. it is