add option to logrotate for conversional policy.

lib/template/setting/rulingcom_log.erb

@@ -1,24 +1,32 @@
 /var/log/rulingcom/*.log  {
     daily
-    rotate 5
+    dateext
+    compress
+    rotate 30
 }
 
 #Resque
 <%= "#{@project_folder}/nginx/logs/access.log" %>{
-     daily
-    rotate 5 
+    daily
+    dateext
+    compress
+    rotate 30
 }
 
 #DB log
 /var/log/mongodb{
     daily
-    rotate 5  
+    dateext
+    compress
+    rotate 30
 }
 
 #Orbit
 <%= "#{@project_folder}/log/*production.log" %>{
-     daily
-    rotate 5 
+    daily
+    dateext
+    compress
+    rotate 30
 }
 # end of Orbit,EXTEND IF NEEDED