Extend hcl2 support with more functions

Signed-off-by: CrazyMax <crazy-max@users.noreply.github.com>

vendor/github.com/hashicorp/go-cty-funcs/uuid/uuid_v4.go

@@ -0,0 +1,28 @@
+package uuid
+
+import (
+	"github.com/google/uuid"
+	"github.com/zclconf/go-cty/cty"
+	"github.com/zclconf/go-cty/cty/function"
+)
+
+var V4Func = function.New(&function.Spec{
+	Params: []function.Parameter{},
+	Type:   function.StaticReturnType(cty.String),
+	Impl: func(args []cty.Value, retType cty.Type) (ret cty.Value, err error) {
+		uuid, err := uuid.NewRandom()
+		if err != nil {
+			return cty.UnknownVal(cty.String), err
+		}
+		return cty.StringVal(uuid.String()), nil
+	},
+})
+
+// V4 generates and returns a Type-4 UUID in the standard hexadecimal string
+// format.
+//
+// This is not a "pure" function: it will generate a different result for each
+// call.
+func V4() (cty.Value, error) {
+	return V4Func.Call(nil)
+}

vendor/github.com/hashicorp/go-cty-funcs/uuid/uuid_v5.go

@@ -0,0 +1,51 @@
+package uuid
+
+import (
+	"fmt"
+
+	uuidv5 "github.com/google/uuid"
+	"github.com/zclconf/go-cty/cty"
+	"github.com/zclconf/go-cty/cty/function"
+)
+
+var V5Func = function.New(&function.Spec{
+	Params: []function.Parameter{
+		{
+			Name: "namespace",
+			Type: cty.String,
+		},
+		{
+			Name: "name",
+			Type: cty.String,
+		},
+	},
+	Type: function.StaticReturnType(cty.String),
+	Impl: func(args []cty.Value, retType cty.Type) (ret cty.Value, err error) {
+		var namespace uuidv5.UUID
+		switch {
+		case args[0].AsString() == "dns":
+			namespace = uuidv5.NameSpaceDNS
+		case args[0].AsString() == "url":
+			namespace = uuidv5.NameSpaceURL
+		case args[0].AsString() == "oid":
+			namespace = uuidv5.NameSpaceOID
+		case args[0].AsString() == "x500":
+			namespace = uuidv5.NameSpaceX500
+		default:
+			if namespace, err = uuidv5.Parse(args[0].AsString()); err != nil {
+				return cty.UnknownVal(cty.String), fmt.Errorf("uuidv5() doesn't support namespace %s (%v)", args[0].AsString(), err)
+			}
+		}
+		val := args[1].AsString()
+		return cty.StringVal(uuidv5.NewSHA1(namespace, []byte(val)).String()), nil
+	},
+})
+
+// V5 generates and returns a Type-5 UUID in the standard hexadecimal
+// string format.
+//
+// This is not a "pure" function: it will generate a different result for each
+// call.
+func V5(namespace cty.Value, name cty.Value) (cty.Value, error) {
+	return V5Func.Call([]cty.Value{namespace, name})
+}