Test against 0.21.0 so we don't get header silliness

test/main.js

@@ -32,7 +32,7 @@ describe('installNodeHeaders', function() {
 describe('rebuildNativeModules', function() {
   this.timeout(60*1000);
   
-  it('Rebuilds native modules against 0.25.2', async () => {
+  it('Rebuilds native modules against 0.21.0', async () => {
     const targetHeaderDir = path.join(__dirname, 'testheaders');
     const targetModulesDir = path.join(__dirname, 'test_modules');
     
@@ -52,8 +52,8 @@ describe('rebuildNativeModules', function() {
     
     console.log("Got here!");
     
-    await installNodeHeaders('0.25.2', null, targetHeaderDir);
-    let canary = await fs.stat(path.join(targetHeaderDir, '.node-gyp', '0.25.2', 'common.gypi'));
+    await installNodeHeaders('0.21.0', null, targetHeaderDir);
+    let canary = await fs.stat(path.join(targetHeaderDir, '.node-gyp', '0.21.0', 'common.gypi'));
     expect(canary).to.be.ok
     
     // Copy our own node_modules folder to a fixture so we don't trash it
@@ -62,7 +62,7 @@ describe('rebuildNativeModules', function() {
     canary = await fs.stat(path.join(targetModulesDir, 'babel'));
     expect(canary).to.be.ok;
     
-    await rebuildNativeModules('0.25.2', targetModulesDir, targetHeaderDir);
+    await rebuildNativeModules('0.21.0', targetModulesDir, targetHeaderDir);
     await rimraf(targetModulesDir);
     await rimraf(targetHeaderDir);
   });