Ci/bump simulator wait

[sidshas03]

Relates to #218 (stabilizes acceptance matrix for that feature PR)

Problem

The acceptance test matrix is experiencing frequent timeouts around the 20–27 minute mark, with jobs failing out of the "Run acceptance test" step. This is consistent with CloudStack simulator readiness rather than provider logic.

Solution

Double the simulator readiness wait from 10 minutes (20 × 30s) to 20 minutes (40 × 30s).

Changes

• In .github/actions/setup-cloudstack/action.yml, change: until [ $T -gt 20 ] || curl -sfL http://localhost:8080 --output /dev/null → until [ $T -gt 40 ] || curl -sfL http://localhost:8080 --output /dev/null

Scope

CI only; no provider logic changes. Intended to stabilize the matrix for #218.

Risk: none (CI-only)

Why 20 minutes? Prior runs failed around 24–27m; extending readiness to 20m typically prevents simulator bring-up thrash while keeping job time reasonable.

Testing

• [ ] Confirm the increased wait in logs
• [ ] Monitor the acceptance matrix post-merge

CC: @kiranchavala — relates to #218