Extend hcl2 support with more functions

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

vendor/github.com/zclconf/go-cty/cty/set/rules.go

@@ -22,6 +22,10 @@ type Rules interface {
 	// though it is *not* required that two values with the same hash value
 	// be equivalent.
 	Equivalent(interface{}, interface{}) bool
+
+	// SameRules returns true if the instance is equivalent to another Rules
+	// instance.
+	SameRules(Rules) bool
 }
 
 // OrderedRules is an extension of Rules that can apply a partial order to

vendor/github.com/zclconf/go-cty/cty/set/set.go

@@ -41,7 +41,7 @@ func NewSetFromSlice(rules Rules, vals []interface{}) Set {
 }
 
 func sameRules(s1 Set, s2 Set) bool {
-	return s1.rules == s2.rules
+	return s1.rules.SameRules(s2.rules)
 }
 
 func mustHaveSameRules(s1 Set, s2 Set) {
@@ -53,7 +53,7 @@ func mustHaveSameRules(s1 Set, s2 Set) {
 // HasRules returns true if and only if the receiving set has the given rules
 // instance as its rules.
 func (s Set) HasRules(rules Rules) bool {
-	return s.rules == rules
+	return s.rules.SameRules(rules)
 }
 
 // Rules returns the receiving set's rules instance.