sysutils/munin-node: Fix plugins/zfs_compress if label contains . (dot)

Fixes "[ERROR] config error" that occurs if "." (dot) is in label

PR:		281118
Reported by:	takefu <takefu@airport.fm>
Tested by:	John W. O'Brien <john@saltant.com>
Approved by:	portmgr (maintainer timeout, 3+ months)

sysutils/munin-node/Makefile

@@ -1,6 +1,6 @@
 PORTNAME=	munin
 PORTVERSION=	${MUNIN_VERSION}
-PORTREVISION=	0
+PORTREVISION=	1
 CATEGORIES=	sysutils perl5
 PKGNAMESUFFIX=	-node
 

sysutils/munin-node/plugins/zfs_compress

@@ -13,7 +13,7 @@ EOM
 listing=$(zfs get -t filesystem -H compressratio)
 
 while read -r label _ ratio _; do
-	clean_label=$(echo "${label}" | sed -e 's|/|__|g')
+	clean_label=$(echo "${label}" | sed -e 's|/|__|g' -e 's|\.|_|g' )
 	echo "${clean_label}.label ${label}"
 	echo "${clean_label}.value ${ratio%x}"
 done <<eot