DAOS-16209 pool: return mem file size on pool query

[NiuYawei]

Return the mem file size for phase2 pool on pool query. This patch
bumped DAOS_POOL_VERSION from 6 to 7, and dropped version 5 support.

Update control-plane and dRPC code for pool query, query targets and
pool create to use the mem file size value from space query API and add
relevant unit test coverage.

Required-githooks: true

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• Any tests skipped by the ticket being addressed have been run and passed in the PR.

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[github-actions]

Ticket title is 'Return VOS file capacity in addition to meta blob size on pool query'
Status is 'In Review'
Labels: 'md_on_ssd2'
https://daosio.atlassian.net/browse/DAOS-16209

[daosbuild1]

Test stage NLT on EL 8.8 completed with status UNSTABLE. https://build.hpdd.intel.com/job/daos-stack/job/daos//view/change-requests/job/PR-15511/2/testReport/

[daosbuild1]

Test stage Functional Hardware Medium completed with status UNSTABLE. https://build.hpdd.intel.com/job/daos-stack/job/daos//view/change-requests/job/PR-15511/2/testReport/

[tanabarr]

pushed partial fix for the purposes of manual testing, unit test fixes are still required

[daosbuild1]

Test stage NLT on EL 8.8 completed with status UNSTABLE. https://build.hpdd.intel.com/job/daos-stack/job/daos//view/change-requests/job/PR-15511/3/testReport/

[daosbuild1]

Test stage Unit Test on EL 8.8 completed with status UNSTABLE. https://build.hpdd.intel.com/job/daos-stack/job/daos//view/change-requests/job/PR-15511/5/testReport/

[daosbuild1]

Test stage Unit Test with memcheck on EL 8.8 completed with status UNSTABLE. https://build.hpdd.intel.com/job/daos-stack/job/daos//view/change-requests/job/PR-15511/5/testReport/

[daosbuild1]

Test stage Functional Hardware Medium completed with status UNSTABLE. https://build.hpdd.intel.com/job/daos-stack/job/daos//view/change-requests/job/PR-15511/6/testReport/

[tanabarr]

https://build.hpdd.intel.com/blue/organizations/jenkins/daos-stack%2Fdaos/detail/PR-15511/6/tests/
failed with the following issues:

• doxygen warnings for daos_pool.h
• clang formatting
• known failure in RbldPoolDestroyWithIO

[daosbuild1]

Test stage NLT on EL 8.8 completed with status UNSTABLE. https://build.hpdd.intel.com/job/daos-stack/job/daos//view/change-requests/job/PR-15511/9/testReport/

[daosbuild1]

Test stage Functional Hardware Medium completed with status UNSTABLE. https://build.hpdd.intel.com/job/daos-stack/job/daos//view/change-requests/job/PR-15511/9/testReport/