meta-facebook: rsyslog: Use FQDN for hostname

as title, allows logs from different subdomains to be distinct.

Change-Id: I934d4f3e943c17dc4bc3ca9fd9f427f0529829cf
Signed-off-by: Amithash Prasasd <amithash@meta.com>
diff --git a/meta-facebook/recipes-extended/rsyslog/rsyslog/rsyslog.conf b/meta-facebook/recipes-extended/rsyslog/rsyslog/rsyslog.conf
index 5a85aad..e84f7a5 100644
--- a/meta-facebook/recipes-extended/rsyslog/rsyslog/rsyslog.conf
+++ b/meta-facebook/recipes-extended/rsyslog/rsyslog/rsyslog.conf
@@ -7,6 +7,9 @@
 #
 # Ported from debian's sysklogd.conf
 
+# Preserve full-hostname
+$PreserveFQDN on
+
 # Journal-style logging
 # Limit to no more than 2000 entries in one minute and enable the
 # journal workaround to avoid duplicate entries