vmtest.rootfsbuild: install check

We don't have a nice automated way to run the C unit tests from the main
vmtest CLI yet (I'm probably going to wait until we convert to Meson to
see how that will work), but at least install check so it can be done
manually.

Signed-off-by: Omar Sandoval <[email protected]>

Author: osandov

vmtest/rootfsbuild.py

@@ -37,6 +37,7 @@
     "python3-setuptools",
     # Test dependencies.
     "btrfs-progs",
+    "check",
     "iproute2",
     "kexec-tools",
     "kmod",