Fix: checking available image size

[kvaps]

Signed-off-by: Andrei Kvapil kvapss@gmail.com

What this PR does / why we need it:

This PR fixes the issue of checking size for the end device.

Currently we check if actual block-volume is larger than requested size in PVC.
However we should check if actual block-volume is smaller than requested size in PVC, because this might blocking the image upload.

Which issue(s) this PR fixes:
Fixes #3159

Special notes for your reviewer:

Release note:

Fix: checking available image size

[kvaps]

/assign @awels

[kubevirt-bot]

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[kubevirt-bot]

@kvaps: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
pull-cdi-unit-test	c750a2d	link	false	/test pull-cdi-unit-test
pull-cdi-goveralls	c750a2d	link	false	/test pull-cdi-goveralls
pull-cdi-unit-test-s390x	c750a2d	link	false	/test pull-cdi-unit-test-s390x
pull-containerized-data-importer-e2e-destructive	c750a2d	link	true	/test pull-containerized-data-importer-e2e-destructive
pull-containerized-data-importer-e2e-nfs	c750a2d	link	true	/test pull-containerized-data-importer-e2e-nfs
pull-containerized-data-importer-e2e-hpp-latest	c750a2d	link	true	/test pull-containerized-data-importer-e2e-hpp-latest
pull-containerized-data-importer-e2e-upg	c750a2d	link	true	/test pull-containerized-data-importer-e2e-upg
pull-containerized-data-importer-non-csi-hpp	c750a2d	link	true	/test pull-containerized-data-importer-non-csi-hpp
pull-containerized-data-importer-e2e-istio	c750a2d	link	true	/test pull-containerized-data-importer-e2e-istio
pull-containerized-data-importer-e2e-hpp-previous	c750a2d	link	true	/test pull-containerized-data-importer-e2e-hpp-previous
pull-containerized-data-importer-e2e-ceph	c750a2d	link	true	/test pull-containerized-data-importer-e2e-ceph
pull-containerized-data-importer-e2e-ceph-wffc	c750a2d	link	true	/test pull-containerized-data-importer-e2e-ceph-wffc

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[kvaps]

Closed in favor #3461