Bug 1518762 - Avoid error in psutil.disk_io_counters in resourcemonit…

…or r=ahal

Imports giampaolo/psutil@8f99f37
to fix a bug with Linux kernel 4.18+, giampaolo/psutil#1354
(to be included in a future release of psutil, version 5.5.0)

Differential Revision: https://phabricator.services.mozilla.com/D16028

UltraBlame original commit: e26eda77b71c6c02db69441236dd95fc0db5c7f2

third_party/python/psutil/psutil/_pslinux.py

@@ -9614,6 +9614,39 @@
 8
 "
 
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+18
++
+has
+4
+fields
+added
+:
+
+#
+"
+3
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+hda
+8
+8
+8
+8
+8
+8
+8
+8
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+8
+8
+0
+0
+0
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+"
+
 #
 See
 :
@@ -9735,6 +9768,11 @@
 =
 =
 14
+or
+fields_len
+=
+=
+18
 :
 
 #