fix ie11-polyfill so Promise.all works in IE11

fixes: CNVS-33769

the file we were building with core-js was
not including an array iterator polyfill
so if you were using this polyfill in IE 11
and did `Promise.all([1,2])` it would fail
saying ‘1,2 is not iterable!’

test plan:
in IE11,
load a page in canvas
open the developer tools and type:
Promise.all([1,2]).then(function(o,t){console.log(‘it worked’, o, t)})
it should log:
“it worked 1 2”
and not throw an error

Change-Id: I49a6cd439c151b7703d77a7400856f438937443d
Reviewed-on: https://gerrit.instructure.com/97219
Tested-by: Jenkins
Reviewed-by: John Corrigan <jcorrigan@instructure.com>
QA-Review: Benjamin Christian Nelson <bcnelson@instructure.com>
Product-Review: Ryan Shaw <ryan@instructure.com>

script/make-ie11-polyfill.js

@@ -6,12 +6,9 @@ const FEATURES_TO_POLYFILL=[
   'es6.promise',
   'es6.object.assign',
   'es6.object.is',
-  'es6.array.from',
-  'es6.array.of',
-  'es6.array.find',
-  'es6.array.find-index',
+  'es6.array',
   'es7.array.includes',
-  'es6.function.name',
+  'es6.function',
   'es6.string.ends-with',
   'es6.string.includes',
   'es6.string.starts-with',
@@ -27,6 +24,6 @@ coreJsBuilder({
   umd: false
 }).then(code => {
   const minifedCode = UglifyJS.minify(code, {fromString: true, warnings: true}).code
-  const contents = '//THIS FILE WAS AUTOGENERATED BY script/make-ie11-shim.js\n' + minifedCode
+  const contents = '//THIS FILE WAS AUTOGENERATED BY script/make-ie11-polyfill.js\n' + minifedCode
   fs.writeFile(OUTPUT_FILE, contents)
-}).catch(console.error)
+}).catch(console.error)