fix(rootfs-block): make the base module dependency explicit

When dracut.sh is called with "--modules rootfs-block",
make sure dracut-lib.sh is installed by making the base module an
explicit dependency.

modules.d/95rootfs-block/module-setup.sh

@@ -7,7 +7,7 @@ check() {
 
 # called by dracut
 depends() {
-    echo fs-lib
+    echo base fs-lib
 }
 
 cmdline_journal() {