W-20162376-DR-responsibilities

[luanamulesoft]

…CH2 HA/DR

• Add HA vs DR definitions and RTO/RPO
• Add Shared Responsibility table (MuleSoft vs Customer) for DR
• Add Customer Responsibility for Disaster Recovery section
• Expand Suggested Alternative Deployment Model with GSLB/DLB and health checks
• Apply style guide: active voice, contractions, no non-acronym parentheses, conciseness

Made-with: Cursor

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[terminology-check]

This PR contains some terms that are considered warnings according to the Inclusive Product Language initiative

• cloudhub/modules/ROOT/pages/cloudhub-hadr.adoc: man-made
  Please, use other terminology for the found warnings. You can follow the suggested replacements described here.