hadoop-hdfs dependency reverted

Fix of FileSystem creations
```java
...
INFO  2014-04-24 18:16:23,127 [][Configuration.java:840] : fs.default.name is deprecated. Instead, use fs.defaultFS
WARN  2014-04-24 18:16:23,505 [][NativeCodeLoader.java:62] : Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
java.io.IOException: No FileSystem for scheme: hdfs
	at org.apache.hadoop.fs.FileSystem.getFileSystemClass(FileSystem.java:2421)
	at org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:2428)
	at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:88)
	at org.apache.hadoop.fs.FileSystem$Cache.getInternal(FileSystem.java:2467)
	at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:2449)
	at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:367)
	at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:166)
	at org.apache.falcon.regression.core.util.HadoopUtil.getFileSystem(HadoopUtil.java:407)
	at org.apache.falcon.regression.core.interfaces.IEntityManagerHelper.getHadoopFS(IEntityManagerHelper.java:158)
	at org.apache.falcon.regression.testHelper.BaseTestClass.<init>(BaseTestClass.java:69)
	at org.apache.falcon.regression.NewRetryTest.<init>(NewRetryTest.java:66)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
	...
```