Use enterprise mongodb for enterprise search snippets (#449)

# Summary

In enterprise snippets we declare the mdb version as 8.0.10 without the
`-ent` suffix.
The agents then will download a community version of the mongodb, not
the enterprise:

## Proof of Work

<!-- Enter your proof that it works here.-->

## Checklist

- [ ] Have you linked a jira ticket and/or is the ticket in the title?
- [ ] Have you checked whether your jira ticket required DOCSP changes?
- [ ] Have you added changelog file?
    - use `skip-changelog` label if not needed
- refer to [Changelog files and Release
Notes](https://github.com/mongodb/mongodb-kubernetes/blob/master/CONTRIBUTING.md#changelog-files-and-release-notes)
section in CONTRIBUTING.md for more details

---------

Co-authored-by: Yavor Georgiev <[email protected]>
Co-authored-by: Yavor Georgiev <[email protected]>

Author: lsierant

controllers/searchcontroller/enterprise_search_source.go

@@ -51,7 +51,7 @@ func (r EnterpriseResourceSearchSource) KeyfileSecretName() string {
 }
 
 func (r EnterpriseResourceSearchSource) Validate() error {
-	version, err := semver.ParseTolerant(r.Spec.GetMongoDBVersion())
+	version, err := semver.ParseTolerant(util.StripEnt(r.Spec.GetMongoDBVersion()))
 	if err != nil {
 		return xerrors.Errorf("error parsing MongoDB version '%s': %w", r.Spec.GetMongoDBVersion(), err)
 	} else if version.LT(semver.MustParse("8.0.10")) {

docker/mongodb-kubernetes-tests/tests/search/fixtures/enterprise-replicaset-sample-mflix.yaml

@@ -5,7 +5,7 @@ metadata:
   name: mdb-rs
 spec:
   members: 3
-  version: 8.0.10
+  version: 8.0.10-ent
   type: ReplicaSet
   opsManager:
     configMapRef:

docs/search/02-search-enterprise-deploy/code_snippets/02_0305_create_mongodb_database_resource.sh

@@ -5,7 +5,7 @@ metadata:
   name: ${MDB_RESOURCE_NAME}
 spec:
   members: 3
-  version: ${MDB_VERSION}
+  version: ${MDB_VERSION}-ent
   type: ReplicaSet
   opsManager:
     configMapRef: