Correct encoding issue with AMP sustemd and Python 3.5

NEWS

@@ -15,7 +15,7 @@ Changes:
 
 Enhancements and new features:
 
-    * WebUI CPU consumption optimization (issue #836) 
+    * WebUI CPU consumption optimization (issue #836)
     * Add ZeroMQ exporter (issue #939)
     * Add CouchDB exporter (issue #928)
     * Add hotspot Wifi informations (issue #937)

glances/amps/glances_systemd.py

@@ -48,7 +48,7 @@ systemctl_cmd=/usr/bin/systemctl --plain
 from subprocess import check_output
 
 from glances.logger import logger
-from glances.compat import iteritems
+from glances.compat import iteritems, to_ascii
 from glances.amps.glances_amp import GlancesAmp
 
 
@@ -76,7 +76,7 @@ class Amp(GlancesAmp):
         else:
             status = {}
             # For each line
-            for r in res.split('\n')[1:-8]:
+            for r in to_ascii(res).split('\n')[1:-8]:
                 # Split per space .*
                 l = r.split()
                 if len(l) > 3:

glances/compat.py

@@ -106,6 +106,8 @@ else:
     def to_ascii(s):
         """Convert the unicode 's' to a ASCII string
         Usefull to remove accent (diacritics)"""
+        if isinstance(s, binary_type):
+            return s
         return unicodedata.normalize('NFKD', s).encode('ASCII', 'ignore')
 
     def listitems(d):