parselogs.py: ignore rdrand initialization failure

On the system whose cpu doesn't support rdrand,
there comes below message when start rngd service
 #systemctl status rngd
 [snip]
 Feb 25 05:08:14 qemux86-64 rngd[133]: [rdrand]: Initialization Failed
 [snip]

Actually the failed message doesn't matter as it
only indicates one entropy source as rdrand fails
to initialize and won't affect rngd function.

So add to ignore the failure message to fix below
error during do_testimage:
NOTE: ======================================================================
NOTE: FAIL: test_parselogs (parselogs.ParseLogsTest)
NOTE: ----------------------------------------------------------------------
NOTE: Traceback (most recent call last):
  File "/buildarea/layers/oe-core/meta/lib/oeqa/core/decorator/__init__.py", line 36, in wrapped_f
    return func(*args, **kwargs)
  File "/buildarea/layers/oe-core/meta/lib/oeqa/runtime/cases/parselogs.py", line 370, in test_parselogs
    self.assertEqual(errcount, 0, msg=self.msg)
AssertionError: 1 != 0 : Log: /buildarea/tmp/work/qemux86-64-wrs-linux/wrlinux-image-std/1.0-r5/target_logs/daemon.log
Central error: 2020-03-06T09:45:12.774286+00:00 qemux86-64 rngd[134]: [rdrand]: Initialization Failed

Reference: https://github.com/nhorman/rng-tools/pull/84

(From OE-Core rev: 09c4f9068858bf59eb60584a497f987bdd1e196e)

Signed-off-by: Mingli Yu <mingli.yu@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 2 insertions, 1 deletions

diff --git a/meta/lib/oeqa/runtime/cases/parselogs.py b/meta/lib/oeqa/runtime/cases/parselogs.py
index 3cad0709a1..6444fe814c 100644
--- a/meta/lib/oeqa/runtime/cases/parselogs.py
+++ b/meta/lib/oeqa/runtime/cases/parselogs.py
@@ -56,7 +56,8 @@ common_errors = [
     "error retry time-out =",
     "logind: cannot setup systemd-logind helper (-61), using legacy fallback",
     "Error changing net interface name 'eth0' to ",
-    "Cannot find a map file"
+    "Cannot find a map file",
+    "[rdrand]: Initialization Failed"
     ]
 
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