General 9.5 release checklist

[jonels-msft]

• [x] Bump version
  • :vimgrep '\(\<9\.\?4\>\)\|\(94_\)' **/*.rst *.py
• [x] Update all installation steps to use new package name
• [x] Update our upgrade steps
• [x] Verify Installation steps with new packages (single-machine cluster install)
  • [x] Debian 8 Jessie — ami-0e79236b
    • requires https://unix.stackexchange.com/a/508728
  • [x] Debian 9 Stretch — ami-066a93633945763a8
  • [x] Debian 10 Buster — ami-0ea08f325bd2bbf69
  • [x] Ubuntu 16.04 Xenial — ami-0765f2a0e038358f8
  • [x] Ubuntu 18.04 Bionic Beaver — ami-0ee5e851705bfaf7a
  • [x] Ubuntu 20.04 Focal — ami-0cfc8da67f8bd8679
  • [ ] CentOS 6 — ami-0db8e77c005d79e33
    • ERROR: epoll_ctl() failed: No such file or directory
  • [x] CentOS 7 — ami-01e36b7901e884a10
  • [x] CentOS 8 — ami-04703ea1a1d8f892f
  • [ ] RHEL 6 — ami-02d0e2f9af142f67e
    • ERROR: epoll_ctl() failed: No such file or directory
  • [x] RHEL 7 — ami-015d91fd7a96cbfbd
  • [x] RHEL 8 — ami-00c1b07c4c4322ad4
• [x] Test Multi-tenant tutorial and use-case guide (on just one version)
• [x] Test Real-time analytics tutorial and use-case guide (on Docker)
• [x] scan for any other udf and guc changes (in Community and Enterprise)
  • Did this already in a separate task for 9.5
• [x] Scan for updated extensions on Citus Cloud
• [x] Verify there are no Sphinx warnings in local build
  • sphinx-build -b html -a -n -W . _build
  • (Remove _build directory and try fresh too)
• [ ] Test enterprise install on one debian and one centos version
  • postgresql-12-citus-enterprise-9.5 is not yet released
• [x] Update citusdata.com/download links.
  • [ ] Confirm with Claire that it goes live after merge
• [x] Create new 9.5 release branch and set as default ver in RTD (advanced settings tab)
• [x] Rebuild previous version so that canonical link gets updated