Alphabetize Pixie clouds to match CNCF guidelines

[ddelnano]

Summary: Alphabetize Pixie clouds to match CNCF guidelines

This ensures the pixie cloud offerings match the CNCF requirements documented here.

There should be no links or forms for capturing enterprise support leads. Instead, it is fine to have an enterprise support, commercial partners or similar page. Companies must be listed on that page in alphabetical order, or the order can be changed randomly on each page load.

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[ddelnano]

@aimichelle this is ready for review.