test: speed up simple/test-fs-watch

Don't wait a full second before starting the watcher, 10 ms ought to be
more than enough time.  Reduces running time from 1250 ms to 250 ms on
my system.

test/simple/test-fs-watch.js

@@ -77,7 +77,7 @@ assert.doesNotThrow(
 
 setTimeout(function() {
   fs.writeFileSync(filepathOne, 'world');
-}, 1000);
+}, 10);
 
 
 process.chdir(testDir);
@@ -100,7 +100,7 @@ assert.doesNotThrow(
 
 setTimeout(function() {
   fs.writeFileSync(filepathTwoAbs, 'pardner');
-}, 1000);
+}, 10);
 
 try { fs.unlinkSync(filepathThree); } catch (e) {}
 try { fs.mkdirSync(testsubdir, 0700); } catch (e) {}
@@ -124,7 +124,7 @@ assert.doesNotThrow(
 setTimeout(function() {
   var fd = fs.openSync(filepathThree, 'w');
   fs.closeSync(fd);
-}, 1000);
+}, 10);
 
 // https://github.com/joyent/node/issues/2293 - non-persistent watcher should
 // not block the event loop