build: add missing dnf-plugins-core package on centos-8

Type: fix

Change-Id: I1a4d9a7a8089cbf488dcd6f09eec6b4e0d0d72fe
Signed-off-by: Dave Wallace <dwallacelf@gmail.com>
diff --git a/Makefile b/Makefile
index d4d39b3..268c87f 100644
--- a/Makefile
+++ b/Makefile
@@ -285,7 +285,7 @@
 	@sudo -E yum install $(CONFIRM) $(RPM_DEPENDS)
 	@sudo -E debuginfo-install $(CONFIRM) glibc openssl-libs mbedtls-devel zlib
 else ifeq ($(OS_ID)-$(OS_VERSION_ID),centos-8)
-	@sudo -E dnf install $(CONFIRM) epel-release
+	@sudo -E dnf install $(CONFIRM) dnf-plugins-core epel-release
 	@sudo -E dnf config-manager --set-enabled PowerTools
 	@sudo -E dnf groupinstall $(CONFIRM) $(RPM_DEPENDS_GROUPS)
 	@sudo -E dnf install $(CONFIRM) $(RPM_DEPENDS)