test: load common.js in all tests

common.js contains code that detects leaked variables.

In preparation for an eslint rule that will enforce loading common.js in
test files, load it everywhere it can be loaded and use an
`eslint-disable` comment for files that intentionally leak.

PR-URL: #3157
Reviewed-By: Rod Vagg <rod@vagg.org>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>

test/addons/async-hello-world/test.js

@@ -1,4 +1,5 @@
 'use strict';
+require('../../common');
 var assert = require('assert');
 var binding = require('./build/Release/binding');
 var called = false;

test/addons/at-exit/test.js

@@ -1,2 +1,3 @@
 'use strict';
+require('../../common');
 var binding = require('./build/Release/binding');

test/addons/heap-profiler/test.js

@@ -1,5 +1,7 @@
 'use strict';
 
+require('../../common');
+
 const binding = require('./build/Release/binding');
 
 // Create an AsyncWrap object.

test/addons/hello-world-function-export/test.js

@@ -1,4 +1,5 @@
 'use strict';
+require('../../common');
 var assert = require('assert');
 var binding = require('./build/Release/binding');
 assert.equal('world', binding());

test/addons/hello-world/test.js

@@ -1,4 +1,5 @@
 'use strict';
+require('../../common');
 var assert = require('assert');
 var binding = require('./build/Release/binding');
 assert.equal('world', binding.hello());

test/addons/repl-domain-abort/test.js

@@ -1,4 +1,5 @@
 'use strict';
+require('../../common');
 var assert = require('assert');
 var repl = require('repl');
 var stream = require('stream');

test/debugger/test-debugger-repl-break-in-module.js

@@ -1,4 +1,5 @@
 'use strict';
+require('../common');
 var repl = require('./helper-debugger-repl.js');
 
 repl.startDebugger('break-in-module/main.js');

test/debugger/test-debugger-repl-restart.js

@@ -1,4 +1,5 @@
 'use strict';
+require('../common');
 var repl = require('./helper-debugger-repl.js');
 
 repl.startDebugger('breakpoints.js');

test/debugger/test-debugger-repl-term.js

@@ -1,4 +1,5 @@
 'use strict';
+require('../common');
 process.env.NODE_FORCE_READLINE = 1;
 
 var repl = require('./helper-debugger-repl.js');

test/debugger/test-debugger-repl.js

@@ -1,4 +1,5 @@
 'use strict';
+require('../common');
 var repl = require('./helper-debugger-repl.js');
 
 repl.startDebugger('breakpoints.js');