DAOS-18519 test: Update test pool size for new defaults

[phender]

The default BS cluster size was increased from 32MB -> 128MB in MD on SSD mode. Updating the test pool sizes to work with this new default.

Skip-unit-tests: true
Skip-fault-injection-test: true

Steps for the author:

• Commit message follows the guidelines.
• Appropriate Features or Test-tag pragmas were used.
• Appropriate Functional Test Stages were run.
• At least two positive code reviews including at least one code owner from each category referenced in the PR.
• Testing is complete. If necessary, forced-landing label added and a reason added in a comment.

After all prior steps are complete:

• Gatekeeper requested (daos-gatekeeper added as a reviewer).

[github-actions]

Ticket title is 'aggregation/continuous_write.py:ContinuousWrite.test_continuous_write - pool create failed: DER_INVAL(-1003): Invalid parameters - Meta blob size is less than minimal size'
Status is 'In Progress'
Labels: 'ci_master_daily,ci_master_weekly,daily_test,md_on_ssd,weekly_test'
https://daosio.atlassian.net/browse/DAOS-18519

[daosbuild3]

Test stage Functional Hardware Medium MD on SSD completed with status UNSTABLE. https://jenkins-3.daos.hpc.amslabs.hpecorp.net/job/daos-stack/job/daos//view/change-requests/job/PR-17465/1/testReport/

[daosbuild3]

Test stage Functional Hardware Large MD on SSD completed with status UNSTABLE. https://jenkins-3.daos.hpc.amslabs.hpecorp.net/job/daos-stack/job/daos//view/change-requests/job/PR-17465/1/testReport/

[daosbuild3]

Test stage Functional Hardware Large MD on SSD completed with status UNSTABLE. https://jenkins-3.daos.hpc.amslabs.hpecorp.net/job/daos-stack/job/daos//view/change-requests/job/PR-17465/2/testReport/

[daosbuild3]

Test stage Functional Hardware Medium MD on SSD completed with status UNSTABLE. https://jenkins-3.daos.hpc.amslabs.hpecorp.net/job/daos-stack/job/daos//view/change-requests/job/PR-17465/2/testReport/

[daosbuild3]

Test stage Functional Hardware Large MD on SSD completed with status UNSTABLE. https://jenkins-3.daos.hpc.amslabs.hpecorp.net/job/daos-stack/job/daos//view/change-requests/job/PR-17465/4/testReport/