Fix heka.toml

Change-Id: I8380eaca9f485a65d6806c3dd1f6fb83d9914d59
diff --git a/nova/files/heka.toml b/nova/files/heka.toml
index e15af73..ebbc8e6 100644
--- a/nova/files/heka.toml
+++ b/nova/files/heka.toml
@@ -1,10 +1,11 @@
 [logstreamer_nova]
 type = "LogstreamerInput"
 log_directory = "/var/log/nova"
-file_match = '(?P<Service>.+)\.log\.?(?P<Seq>\d*)$'
+file_match = '(?P<Service>.+)\.log\.?(?P<Index>\d*)?(.gz)?'
 differentiator = ['nova','_','Service']
 priority = ["^Index"]
 decoder = "openstack"
+oldest_duration = "168h"
 
 [openstack]
 type = "SandboxDecoder"