docs(compute-samples): added region tags

[Sita04]

No description provided.

[snippet-bot]

Here is the summary of changes.

You are about to add 4 region tags.

• compute/cloud-client/src/main/java/compute/CreateInstanceTemplate.java:19, tag compute_template_create
• compute/cloud-client/src/main/java/compute/DeleteInstanceTemplate.java:19, tag compute_template_delete
• compute/cloud-client/src/main/java/compute/GetInstanceTemplate.java:19, tag compute_template_get
• compute/cloud-client/src/main/java/compute/ListInstanceTemplates.java:19, tag compute_template_list

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[Sita04]

Blocked by #7071