Back Up System Data in StarlingX

[Ngairangbam Mili]

Brief Description
We need to update the version no 6.0 to 7.0 in the vendor_string.txt in R7.
Severity: Minor

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- [X] This doc is inaccurate in this way: Wrong version in the note_____
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-----------------------------------
Release: on 2023-08-03 21:42:57
SHA:
Source: /backup/kubernetes/backing-up-starlingx-system-data.rst
URL: https://docs.starlingx.io/r/stx.7.0/backup/kubernetes/backing-up-starlingx-system-data.html

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: r/stx.7.0
Review: https://review.opendev.org/c/starlingx/docs/+/890536

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/starlingx/docs/+/890536
Committed: https://opendev.org/starlingx/docs/commit/36ad22e2e7b5856d62e0e38b2cb9e22093262114
Submitter: "Zuul (22348)"
Branch: r/stx.7.0

commit 36ad22e2e7b5856d62e0e38b2cb9e22093262114
Author: Ron Stone <email address hidden>
Date: Fri Aug 4 15:36:06 2023 +0000

    Update ver variable

    Update prod-ver to 7.0
    Modify prod-ver to generate r<n> notation

    Closes-Bug: 2030060

    Signed-off-by: Ron Stone <email address hidden>
    Change-Id: I68e7070742c8b3c8954bfea04d1729af98c382ce