Use epel 7-11 (7-9 is no longer available)

Author: gnosek

scripts/install-sysdig.in

@@ -27,7 +27,7 @@ function install_rpm {
 	if ! yum -q list dkms > /dev/null 2>&1; then
 		echo "* Installing EPEL repository (for DKMS)"
 		if [ $VERSION -eq 7 ] && [ $DISTRO = "centos" ]; then
-			rpm --quiet -i https://mirrors.kernel.org/centos/7/extras/x86_64/Packages/epel-release-7-9.noarch.rpm
+			rpm --quiet -i https://mirrors.kernel.org/centos/7/extras/x86_64/Packages/epel-release-7-11.noarch.rpm
 		elif [ $VERSION -eq 7 ]; then
 			rpm --quiet -i https://mirrors.kernel.org/fedora-epel/7/x86_64/Packages/e/epel-release-7-11.noarch.rpm
 		else