PS-11342 [DOCS] - Review encryption docs to add reuse text 9.7

[patrickbirch]

modified:   docs/apt-repo.md
modified:   docs/authentication-methods.md
modified:   docs/data-at-rest-encryption.md
modified:   docs/encrypt-binary-relay-log-files.md
modified:   docs/encrypt-file-per-table-tablespace.md
modified:   docs/encrypt-logs.md
modified:   docs/encrypt-tablespaces.md
modified:   docs/keyring-components-plugins-overview.md
modified:   docs/percona-sequence-table.md
modified:   docs/quickstart-apt.md
modified:   docs/quickstart-component-keyring.md
modified:   docs/sequence-table.md
modified:   docs/upgrade-checklist-9.7.md
modified:   docs/use-keyring-vault-component.md
modified:   docs/using-amz-kms.md
modified:   docs/using-kmip.md
modified:   docs/verify-encryption.md
new file:   snippets/authentication-9x-overview.md
new file:   snippets/encryption-alter-table-clause.md
new file:   snippets/encryption-architecture-overview.md
new file:   snippets/encryption-keyring-prerequisite.md
new file:   snippets/encryption-log-data-flow.md
new file:   snippets/encryption-log-toggle-behavior.md
modified:   snippets/keyring-components-installation.md
new file:   snippets/keyring-manifest-examples.md
new file:   snippets/keyring-single-instance-warning.md
new file:   snippets/sequence-table-benefits.md
new file:   snippets/sequence-table-concepts.md
new file:   snippets/verify-encryption-queries.md
new file:   snippets/xtrabackup-encryption-support.md