Add airflow 2.0 min requirements

[adam2k]

Description

Make sure that an Airflow deployment is using version 1.10.14 before allowing the upgrade to 2.0.x

🎟 Issue(s)

Resolves astronomer/issues#2289

🧪 Functional Testing

It's possible to test this change locally.

1. Make build with a valid version number in the Makefile
2. Start up Houston API and Astro UI
3. Create a new deployment with a version prior to 1.10.14. (I was testing with 1.10.12)
4. Make sure you have Airflow 2.0 added into your database in the AirflowRelease table. If not, manually add it (you can copy and existing deployment and change the version number for testing purposes)
5. Attempt to upgrade the airflow deployment to 2.0 (see the screen shots below).
6. Make sure you see an error message.
7. After getting the error message, update your deployment Airflow version to 1.10.14 and attempt to upgrade again. You should now see the success message.

📸 Screenshots

📋 Checklist

• Rebased from the main (or release if patching) branch (before testing)
• Ran make test before taking out of draft
• Added/updated applicable tests
• Tested against Houston-API and Astronomer (if necessary).
• Communicated to/tagged owners of respective clients potentially impacted by these changes.
• Updated any related documentation

[codecov]

Codecov Report

Merging #395 (9340512) into main (d42cfb7) will increase coverage by 0.00%.
The diff coverage is 59.25%.

@@           Coverage Diff           @@
##             main     #395   +/-   ##
=======================================
  Coverage   54.51%   54.51%           
=======================================
  Files          32       32           
  Lines        2313     2335   +22     
=======================================
+ Hits         1261     1273   +12     
- Misses        963      968    +5     
- Partials       89       94    +5     

Impacted Files	Coverage Δ
deployment/deployment.go	80.82% <59.25%> (-3.39%)	⬇️

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[andriisoldatenko]

New - is slightly confuse me, cause it's de facto constructor of objects in golang.
can we rename to something more readable rather than just NewAirflowVersion?
AirflowVersionSecond?

[adam2k]

Yeah, I didn't know what we should call it because it's a special case. AirflowVersionSecond or AirflowVersionTwo?

[andriisoldatenko]

yep but i. prefer to name explain value, since it's airflow 2.0.0 specific.
AirflowVersionTwo +1

[adam2k]

Updated to AirflowVersionTwo