Disable btrfs for RHEL in podman spec

[raukadah]

Since btrfs-progs-devel is not available in RHEL8 and the spec
fails to build it. Making the btrfs conditional in spec file
as well as build_rpm.sh fixes the issue.

Signed-off-by: Chandan Kumar (raukadah) raukadah@gmail.com

[openshift-ci-robot]

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[rhatdan]

I would prefer that we do this in the contrib/spec rather then put intelligence into the the main line code for Red Hat.

[raukadah]

@rhatdan In TripleO CI side, on RHEL-8, we wanted to use bash ./contrib/build_rpm.sh script to generate the rpm from checked out patch, so that required dependencies should be automatically gets installed in CI, we checked that part also.

[giuseppe]

LGTM

[raukadah]

/assign @baude

[ssbarnea]

@rhatdan In TripleO CI side, on RHEL-8, we wanted to use bash ./contrib/build_rpm.sh script to generate the rpm from checked out patch, so that required dependencies should be automatically gets installed in CI, we checked that part also.

Longer term it would be nice to add a make rpm target that runs this bash script and that works on all supported platforms (CenOS, RHEL, Fedora). Our OpenStack jobs will help keeping this green. Still, that should in follow-ups.

[rhatdan]

Thanks @raukadah
/lgtm
/approve

[openshift-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: raukadah, rhatdan, ssbarnea

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