[egs] add missing online cmvn config in aishell2 (#2767)

dophist · danpovey · commit f279dd948fae · 2018-10-07T12:14:08.000-04:00
diff --git a/egs/aishell2/s5/conf/online_cmvn.conf b/egs/aishell2/s5/conf/online_cmvn.conf
@@ -0,0 +1 @@
+# configuration file for apply-cmvn-online

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1 @@`
	`1`	`+# configuration file for apply-cmvn-online`