*: reflow comments to 80 characters

This reformats the entire Metropolis codebase to have comments no longer
than 80 characters, implementing CR/66.

This has been done half manually, as we don't have a good integration
between commentwrap/Bazel, but that can be implemented if we decide to
go for this tool/limit.

Change-Id: If1fff0b093ef806f5dc00551c11506e8290379d0
diff --git a/metropolis/node/core/mounts.go b/metropolis/node/core/mounts.go
index 7a15c30..f8f0dae 100644
--- a/metropolis/node/core/mounts.go
+++ b/metropolis/node/core/mounts.go
@@ -27,8 +27,9 @@
 	"source.monogon.dev/metropolis/pkg/logtree"
 )
 
-// setupMounts sets up basic mounts like sysfs, procfs, devtmpfs and cgroups. This should be called early during init
-// as a lot of processes depend on this being available.
+// setupMounts sets up basic mounts like sysfs, procfs, devtmpfs and cgroups.
+// This should be called early during init as a lot of processes depend on this
+// being available.
 func setupMounts(log logtree.LeveledLogger) error {
 	// Set up target filesystems.
 	for _, el := range []struct {
@@ -50,7 +51,8 @@
 		}
 	}
 
-	// Mount all available CGroups for v1 (v2 uses a single unified hierarchy and is not supported by our runtimes yet)
+	// Mount all available CGroups for v1 (v2 uses a single unified hierarchy
+	// and is not supported by our runtimes yet)
 	if err := unix.Mount("tmpfs", "/sys/fs/cgroup", "tmpfs", unix.MS_NOEXEC|unix.MS_NOSUID|unix.MS_NODEV, ""); err != nil {
 		panic(err)
 	}