Create blog article “Defining Network Policy Conformance for Container Network Interface (CNI) providers” (#27159)

* Create 2021-03-09-Defining-NetworkPolicy-Conformance-For-CNIs

* Update content/en/blog/_posts/2021-03-09-Defining-NetworkPolicy-Conformance-For-CNIs

Co-authored-by: Tim Bannister <[email protected]>

* fix name spelling

* Update content/en/blog/_posts/2021-03-09-Defining-NetworkPolicy-Conformance-For-CNIs

Co-authored-by: Tim Bannister <[email protected]>

* Apply suggestions from code review

Co-authored-by: Tim Bannister <[email protected]>

* cleanup, spelling

* clean up, simplify example

* fix typos

* explain result table

* Update content/en/blog/_posts/2021-03-09-Defining-NetworkPolicy-Conformance-For-CNIs

Co-authored-by: Tim Bannister <[email protected]>

* merge code review comments

* Apply suggestions from code review

* Update 2021-03-09-Defining-NetworkPolicy-Conformance-For-CNIs

* Update 2021-03-09-Defining-NetworkPolicy-Conformance-For-CNIs

* Update content/en/blog/_posts/2021-03-09-Defining-NetworkPolicy-Conformance-For-CNIs

Co-authored-by: Tim Bannister <[email protected]>

* Update 2021-03-09-Defining-NetworkPolicy-Conformance-For-CNIs

* fix filename extension

* Update content/en/blog/_posts/2021-03-09-Defining-NetworkPolicy-Conformance-For-CNIs.md

Co-authored-by: Tim Bannister <[email protected]>

* Update content/en/blog/_posts/2021-03-09-Defining-NetworkPolicy-Conformance-For-CNIs.md

Co-authored-by: Tim Bannister <[email protected]>

* Update content/en/blog/_posts/2021-03-09-Defining-NetworkPolicy-Conformance-For-CNIs.md

Co-authored-by: Tim Bannister <[email protected]>

* handle review comments

* Update content/en/blog/_posts/2021-04-20-Defining-NetworkPolicy-Conformance-For-CNIs.md

Co-authored-by: Tim Bannister <[email protected]>

* Minor corrections and tweaks for readability

* Clarifying transports

* Minor changes to blog post

* clarify requirements to run new e2e Network Policy testsuite with
  sonobuoy
* modify link for Network Policy user stories

Co-authored-by: Tim Bannister <[email protected]>
Co-authored-by: Matthew Fenwick <[email protected]>
Co-authored-by: Ricardo Katz <[email protected]>
Co-authored-by: Chris Tomkins <[email protected]>
Co-authored-by: Antonin Bas <[email protected]>

Author: 6 people