fix network policy issue for webserver and flowerui

[pgvishnuram]

Issue Description:

Once platform deployed in openshift, when we install any of kubernetes/celery/local executors - we wont be able to access the UI after the deployment is sucessfull and ends up with error message as "request timed out"

Behaviour Observed:
After debugging the issue , seems to be openshift network SDN does not recognise port-name in network policy and requires port-number to be defined to work properly

Openshift Logs:

networkpolicy.go:556] Ignoring rule in
 NetworkPolicy astronomer-spherical-speed-xxxx/spherical-speed-xxxx-webserver-policy with unsupported named port "airflow-ui" - openshift-sdn logs  

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Read the Pull Request Guidelines for more information.
In case of fundamental code change, Airflow Improvement Proposal (AIP) is needed.
In case of a new dependency, check compliance with the ASF 3rd Party License Policy.
In case of backwards incompatible changes please leave a note in UPDATING.md.

[jedcunningham]

(Oops, wrong one)

[github-actions]

The PR is likely OK to be merged with just subset of tests for default Python and Database versions without running the full matrix of tests, because it does not modify the core of Airflow. If the committers decide that the full tests matrix is needed, they will add the label 'full tests needed'. Then you should rebase to the latest main or amend the last commit of the PR, and push it with --force-with-lease.

[jedcunningham]

Just a couple minor changes to the UPDATING doc @pgvishnuram.

[jedcunningham]

@pgvishnuram, looks like there is a conflict in UPDATING.rst as well. Can you tackle that too?

[himabindu07]

validated this issue : airflow chart version: 1.0.0-rc3
Observed behavior: when I create deployment without deleting NetworkPolicies deployment is in a healthy state, When I do astro deploy able to see the dags on Airflow UI.