sys-mon: be considerate with temperature reading (due to lava fails)

updated git hash of sys-mon retrying 3 times reading the
temperature before throwing and exception

Signed-off-by: Marc Mattmueller <marc.mattmueller@netmodule.com>

recipes-tools/sys-mon/sys-mon_git.bb

@@ -4,7 +4,7 @@ LICENSE = "GPLv2+"
 LIC_FILES_CHKSUM = "file://LICENSE;md5=699dc6077ab50a5eae0d352adaa137c0"
 
 SRC_URI = "git://git.netmodule.intranet/nm-tools/features.git;protocol=ssh;user=gitea;branch=master"
-SRCREV = "21b16866620ffcbb75e32cbcc69395baec04cf48"
+SRCREV = "4617917a887d151b7c45edfcadc3cb5cc44c2b39"
 SRC_URI_append = " \
                    file://sys-mon.conf \
                    file://sys-mon.service \