m/installer/install: move from osbase/build/mkimage/osimage

Move the package osbase/build/mkimage/osimage to
metropolis/installer/install. The package contains "metropolis" in
various strings, so it fits better in //metropolis than in //osbase.
The parent package mkimage no longer exists.

The rename also removes the name clash with osbase/oci/osimage.

Change-Id: Ia228ab94c937f4c7a5b6eb1fcc77993a594d64b6
Reviewed-on: https://review.monogon.dev/c/monogon/+/4296
Tested-by: Jenkins CI
Reviewed-by: Tim Windelschmidt <tim@monogon.tech>
diff --git a/metropolis/cli/takeover/takeover.go b/metropolis/cli/takeover/takeover.go
index cd537a9..805a06d 100644
--- a/metropolis/cli/takeover/takeover.go
+++ b/metropolis/cli/takeover/takeover.go
@@ -18,8 +18,8 @@
 	apb "source.monogon.dev/metropolis/proto/api"
 	netapi "source.monogon.dev/osbase/net/proto"
 
+	"source.monogon.dev/metropolis/installer/install"
 	"source.monogon.dev/osbase/bootparam"
-	"source.monogon.dev/osbase/build/mkimage/osimage"
 	"source.monogon.dev/osbase/kexec"
 	netdump "source.monogon.dev/osbase/net/dump"
 	"source.monogon.dev/osbase/oci"
@@ -136,7 +136,7 @@
 	}
 
 	// Validate that this installation will not fail because of disk issues
-	if _, err := osimage.Plan(oParams); err != nil {
+	if _, err := install.Plan(oParams); err != nil {
 		return nil, fmt.Errorf("failed to plan installation: %w", err)
 	}