internal/rosa: bash artifact

Required by llvm unit and regression tests.

Signed-off-by: Ophestra <cat@gensokyo.uk>

internal/rosa/llvm.go

@@ -129,6 +129,8 @@ func (t Toolchain) newLLVM(variant string, attr *llvmAttr) pkg.Artifact {
 		t.NewPython(),
 		t.NewPerl(),
 		t.NewDiffutils(),
+		t.NewBash(),
+
 		t.NewKernelHeaders(),
 	}
 	if t == toolchainStage3 {