DOC-5616 Support Portal links

[aimurphy]

• Remove the support-url attribute because it isn't used.
• Make it easier to read the supported Python versions for cqlsh, and specify 2.7.12+ because of TLS support.
• Remove two links to a support portal article.
  • Only one was on a published page.
  • The article relates to the standalone cqlsh, and one of the resolutions suggests changing the cqlsh package.
  • Instead, I added the "check TLS support" command to the Astra CLI docs, and mentioned that the user can use venv or symlink as long as the supported Python version is available in the PATH.
  • Preview: cqlsh prerequisites

[eric-schneider]

I'd like @toptobes to review the Python-related changes just to double-check that everything looks right. How the CLI finds a version of Python was something that was discussed in during reviews of the 1.0 overhaul of the docs.

[toptobes]

This version doesn't need to be your system's default Python version as long as it's available in the PATH.

For example, you can use a virtual environment or symbolic links to add a supported Python version without changing your system's default version.

Imo the first paragraph makes it pretty clear but then the second paragraph is a little confusing in that you may think you still need to set python to be the default version via venv or something

To be clear, as long as the python3.11 command or python3.10 or something is a valid command then you'd be good to go. I think the first paragraph supports this, but the second muddies it.

[aimurphy]

Thanks for the input - I removed the confusing sentence

[plpesvc-ds]

Build successful! ✅
Pull requests with matching branch name doc-5616 included in the build:

• DOC-5616 Support Portal links #34 (this pull request)
• https://github.com/riptano/docs-common/pull/262
• https://github.com/riptano/docs-home/pull/208
• https://github.com/riptano/astra-vector-docs/pull/1341
• https://github.com/riptano/astra-docs/pull/979
• DOC-5616 Support Portal links migration-docs#231
• DOC-5616 Support Portal links streaming-learning-docs#69
• DOC-5616 Support Portal links astra-streaming-docs#161
• https://github.com/riptano/mission-control-docs/pull/379
• https://github.com/riptano/opscenter-docs/pull/63
• https://github.com/riptano/studio-docs/pull/26
• https://github.com/riptano/monitoring-docs/pull/18
• https://github.com/riptano/upgrading-docs/pull/53
• https://github.com/riptano/planning-docs/pull/35
• https://github.com/riptano/dev-app-drivers/pull/62

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[eric-schneider]

Awesome! Thank you!