Update Dockerfile to use centos:stream9

[machadovilaca]

Signed-off-by: João Vilaça jvilaca@redhat.com

What this PR does / why we need it:

CentOS 7 is scheduled for EOL as stated in https://wiki.centos.org/About/Product, and already exited the Full Updates phase.
Therefore this PR updates CentOS version in Dockerfile for new builds to use CentOS Stream 9, which is in the full support phase (https://www.centos.org/centos-stream/).

Special notes for your reviewer:

Release note:

Update Dockerfile to use CentOS Stream 9

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
No Duplication information

[machadovilaca]

@alonSadan @rhrazdil

There is an issue related to a bug that is causing the error seen in the tests. It causes network connection problems inside docker when accessing CentOS repositories.

I'd need to do the same as kubevirt/project-infra/pull/1829 for this repository, which updates the docker version in the image used by kubevirtci to run the tests, which will allow us to run CentOS Stream 9.

Is it ok for you if I do that?

[machadovilaca]

Update was made in kubevirt/project-infra/pull/1616, should fix
/retest

[machadovilaca]

/retest

[phoracek]

/retest

[phoracek]

/lgtm
/approve

[kubevirt-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: phoracek

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• OWNERS [phoracek]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment