Add async-iteration features flag

src/async-generators/default/async-class-decl-method.template

@@ -16,6 +16,7 @@ info: |
 
   AsyncGeneratorMethod :
     async [no LineTerminator here] * PropertyName ( UniqueFormalParameters ) { AsyncGeneratorBody }
+features: [async-iteration]
 ---*/
 
 var callCount = 0;

src/async-generators/default/async-class-decl-static-method.template

@@ -16,6 +16,7 @@ info: |
 
   AsyncGeneratorMethod :
     async [no LineTerminator here] * PropertyName ( UniqueFormalParameters ) { AsyncGeneratorBody }
+features: [async-iteration]
 ---*/
 
 var callCount = 0;

src/async-generators/default/async-class-expr-method.template

@@ -16,6 +16,7 @@ info: |
 
   AsyncGeneratorMethod :
     async [no LineTerminator here] * PropertyName ( UniqueFormalParameters ) { AsyncGeneratorBody }
+features: [async-iteration]
 ---*/
 
 var callCount = 0;

src/async-generators/default/async-class-expr-static-method.template

@@ -16,6 +16,7 @@ info: |
 
   AsyncGeneratorMethod :
     async [no LineTerminator here] * PropertyName ( UniqueFormalParameters ) { AsyncGeneratorBody }
+features: [async-iteration]
 ---*/
 
 var callCount = 0;

src/async-generators/default/async-declaration.template

@@ -11,6 +11,7 @@ info: |
   AsyncGeneratorDeclaration:
     async [no LineTerminator here] function * BindingIdentifier ( FormalParameters ) {
       AsyncGeneratorBody }
+features: [async-iteration]
 ---*/
 
 var callCount = 0;

src/async-generators/default/async-expression-named.template

@@ -11,6 +11,7 @@ info: |
   AsyncGeneratorExpression :
     async [no LineTerminator here] function * BindingIdentifier ( FormalParameters ) {
       AsyncGeneratorBody }
+features: [async-iteration]
 ---*/
 
 var callCount = 0;

src/async-generators/default/async-expression.template

@@ -11,6 +11,7 @@ info: |
   AsyncGeneratorExpression :
     async [no LineTerminator here] function * BindingIdentifier ( FormalParameters ) {
       AsyncGeneratorBody }
+features: [async-iteration]
 ---*/
 
 var callCount = 0;

src/async-generators/default/async-obj-method.template

@@ -9,6 +9,7 @@ info: |
 
   AsyncGeneratorMethod :
     async [no LineTerminator here] * PropertyName ( UniqueFormalParameters ) { AsyncGeneratorBody }
+features: [async-iteration]
 ---*/
 
 var callCount = 0;

src/async-generators/non-strict/async-declaration.template

@@ -11,6 +11,7 @@ info: |
   AsyncGeneratorDeclaration:
     async [no LineTerminator here] function * BindingIdentifier ( FormalParameters ) {
       AsyncGeneratorBody }
+features: [async-iteration]
 ---*/
 
 var callCount = 0;

src/async-generators/non-strict/async-expression-named.template

@@ -11,6 +11,7 @@ info: |
   AsyncGeneratorExpression :
     async [no LineTerminator here] function * BindingIdentifier ( FormalParameters ) {
       AsyncGeneratorBody }
+features: [async-iteration]
 ---*/
 
 var callCount = 0;

src/async-generators/non-strict/async-expression.template

@@ -11,6 +11,7 @@ info: |
   AsyncGeneratorExpression :
     async [no LineTerminator here] function * BindingIdentifier ( FormalParameters ) {
       AsyncGeneratorBody }
+features: [async-iteration]
 ---*/
 
 var callCount = 0;

src/async-generators/non-strict/async-obj-method.template

@@ -10,6 +10,7 @@ info: |
 
   AsyncGeneratorMethod :
     async [no LineTerminator here] * PropertyName ( UniqueFormalParameters ) { AsyncGeneratorBody }
+features: [async-iteration]
 ---*/
 
 var callCount = 0;