copr: add missing gcc in mock chroot
copr: add missing gcc in mock chroot

Change-Id: I3f9cd348ddb9b08b33899a1859d66afc0642faa8
Signed-off-by: Sandro Bonazzola <fcb014d63786651910af5db2ecc5316c668188ef@redhat.com>

oVirt/ovirt-hosted-engine-setup,oVirt/ovirt-hosted-engine-setup