Add 0.9.2 test case and stress test

test/test-init.js

 require('./test-0.5.2')
 require('./test-0.6.0')
 require('./test-0.6.2')
-require('./test-0.6.3')
 require('./test-0.7.0')
 require('./test-0.8.0')
 require('./test-0.9.0')
+require('./test-0.9.2')
 require('./test-fetch')
 require('./test-fs')
 require('./test-xmlhttp')
 require('./test-blob')
 require('./test-firebase')
 require('./test-android')
+// require('./test-stress')
 // require('./benchmark')

test/test-0.6.3.js → test/test-stress.js

 const fs = RNFetchBlob.fs
 const { Assert, Comparer, Info, prop } = RNTest
 const describe = RNTest.config({
-  group : '0.6.3',
+  group : 'stress test',
   run : true,
   expand : true,
   timeout : 300000000,