HYD-5417 Logrotate Compress scope if global for chroma-agent*.log

Because the compress keyword is outside of the main stanza, it applies
to all log files that logrotate handles (logrotate just does an include of
everything in /etc/logrotate.d, it doesn't care what the files in
/etc/logrotate.d are named).

This causes all log files of affected systems to be compressed, regardless
of the site's intention to compress or not. We should only 
compress chroma-agent.log files, not all system logs.

 - Edit config file so compress setting is within the scope for 
   /var/log/chroma-agent*.log

Change-Id: Ibe882a099ccd616a08df409d58a03e7eb499f5f4
Signed-off-by: Abiola Saraki <[email protected]>
Reviewed-on: http://review.whamcloud.com/19508
Tested-by: Chroma Test User
Reviewed-by: Tom Nabarro <[email protected]>
Reviewed-by: Chris Gearing <[email protected]>

logrotate.cfg

@@ -1,8 +1,9 @@
-compress
+
 
 /var/log/chroma-agent*.log {
 	missingok
 	rotate 10
 	nocreate
 	size=10M
+	compress
 }