interpolate maps in dynamic blocks (#9921)

Update hcl2 for patch to fix map interpolation in dynamic blocks

jobspec2/parse_test.go

@@ -280,18 +280,39 @@ func TestParseDynamic(t *testing.T) {
 	hcl := `
 job "example" {
 
-dynamic "group" {
-  for_each = ["groupA", "groupB", "groupC"]
-  labels   = [group.value]
+  dynamic "group" {
+    for_each = [
+      { name = "groupA", idx = 1 },
+      { name = "groupB", idx = 2 },
+      { name = "groupC", idx = 3 },
+    ]
+    labels   = [group.value.name]
 
-  content {
-    task "simple" {
-      driver = "raw_exec"
+    content {
+      count = group.value.idx
 
+      service {
+        port = group.value.name
+      }
+
+      task "simple" {
+        driver  = "raw_exec"
+        config {
+          command = group.value.name
+        }
+        meta {
+          VERSION = group.value.idx
+        }
+        env {
+          ID = format("id:%s", group.value.idx)
+        }
+        resources {
+          cpu = group.value.idx
+        }
+      }
     }
   }
 }
-}
 `
 	out, err := ParseWithConfig(&ParseConfig{
 		Path:    "input.hcl",
@@ -305,6 +326,15 @@ dynamic "group" {
 	require.Equal(t, "groupA", *out.TaskGroups[0].Name)
 	require.Equal(t, "groupB", *out.TaskGroups[1].Name)
 	require.Equal(t, "groupC", *out.TaskGroups[2].Name)
+	require.Equal(t, 1, *out.TaskGroups[0].Tasks[0].Resources.CPU)
+	require.Equal(t, "groupA", out.TaskGroups[0].Services[0].PortLabel)
+
+	// interpolation inside maps
+	require.Equal(t, "groupA", out.TaskGroups[0].Tasks[0].Config["command"])
+	require.Equal(t, "1", out.TaskGroups[0].Tasks[0].Meta["VERSION"])
+	require.Equal(t, "id:1", out.TaskGroups[0].Tasks[0].Env["ID"])
+	require.Equal(t, "id:2", out.TaskGroups[1].Tasks[0].Env["ID"])
+	require.Equal(t, "3", out.TaskGroups[2].Tasks[0].Meta["VERSION"])
 }
 
 func TestParse_InvalidScalingSyntax(t *testing.T) {