Set site key filename

src/freedombone-base-tripwire

@@ -115,6 +115,8 @@ function install_tripwire {
     fi
     # Avoid logging the changed database
     sed -i 's|$(TWETC)/tw.pol.*||g' /etc/tripwire/twpol.txt
+    # site key name
+    sed -i 's|$(TWETC)/site.key|$(TWETC)/$(HOSTNAME)-site.key|g' /etc/tripwire/twpol.txt
     # create the policy
     echo '