Add support for CentOS Stream 9

[adarshan-intel]

Description of the changes

Add support for CentOS Stream 9 using the image - quay.io/centos/centos:stream9 to GSC.

How to test this PR?

To test this PR, set follow similar procedure as followed with Ubuntu and do gsc build and signing commands.

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This change is 

[dimakuv]

Reviewable status: 0 of 8 files reviewed, 5 unresolved discussions, not enough approvals from maintainers (3 more required), not enough approvals from different teams (2 more required, approved so far: ) (waiting on @adarshan-intel)

a discussion (no related file):
I'd like to request reviews from @jkr0103 and @anjalirai-intel

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gsc.py line 264 at r1 (raw file):

    if (os_release['ID'] == 'centos'):
        distro = 'quay.io/centos/centos:stream' + version_id

Aren't you supposed to also check that version_id == 9? Otherwise it seems that your code will try to use quay.io/centos/centos:stream8 even for CentOS 8.

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templates/quay.io/centos/centos/apploader.template line 1 at r1 (raw file):

{% extends "apploader.common.template" %}

Isn't this file exactly like templates/centos/apploader.template?

Please instead use the simple:

{% extends "centos/apploader.template" %}

See a similar example for Ubuntu: https://github.com/gramineproject/gsc/blob/master/templates/ubuntu/apploader.template. Recall that Ubuntu is derived from Debian, which is similar to CentOS Stream being derived from CentOS.

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templates/quay.io/centos/centos/Dockerfile.build.template line 1 at r1 (raw file):

{% extends "Dockerfile.common.build.template" %}

ditto for all these files -- can't they all be derived from templates/centos/ files?

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templates/quay.io/centos/centos/Dockerfile.compile.template line 74 at r1 (raw file):

        python3-scipy \
        python3-voluptuous \
        R-core \

Why do you have these random packages like R?

[adarshan-intel]

gsc.py line 264 at r1 (raw file):

Previously, dimakuv (Dmitrii Kuvaiskii) wrote…

Aren't you supposed to also check that version_id == 9? Otherwise it seems that your code will try to use quay.io/centos/centos:stream8 even for CentOS 8.

Done.

[adarshan-intel]

templates/quay.io/centos/centos/apploader.template line 1 at r1 (raw file):

Previously, dimakuv (Dmitrii Kuvaiskii) wrote…

Isn't this file exactly like templates/centos/apploader.template?

Please instead use the simple:

{% extends "centos/apploader.template" %}

See a similar example for Ubuntu: https://github.com/gramineproject/gsc/blob/master/templates/ubuntu/apploader.template. Recall that Ubuntu is derived from Debian, which is similar to CentOS Stream being derived from CentOS.

Done.

[adarshan-intel]

templates/quay.io/centos/centos/Dockerfile.build.template line 1 at r1 (raw file):

Previously, dimakuv (Dmitrii Kuvaiskii) wrote…

ditto for all these files -- can't they all be derived from templates/centos/ files?

Done.

[adarshan-intel]

templates/quay.io/centos/centos/Dockerfile.compile.template line 74 at r1 (raw file):

Previously, dimakuv (Dmitrii Kuvaiskii) wrote…

Why do you have these random packages like R?

Removed unnecessary packages

[adarshan-intel]

Closing this PR as the branch name should follow this convention - name/feature.
Updated PR #206