oeqa/selftest/runcmd: Tweal test timeouts

Load on the autobuilder meant we see occasionaly timeout issues with these tests.
Slightly increase the test timeouts to better reflect the real world timings we
see.

[YOCTO #14262]

(From OE-Core rev: fccd2ade0e345625ed9a4b74a7431b000ce2214f)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/lib/oeqa/selftest/cases/runcmd.py

@@ -27,8 +27,8 @@ class RunCmdTests(OESelftestTestCase):
 
     # The delta is intentionally smaller than the timeout, to detect cases where
     # we incorrectly apply the timeout more than once.
-    TIMEOUT = 5
-    DELTA = 3
+    TIMEOUT = 10
+    DELTA = 8
 
     def test_result_okay(self):
         result = runCmd("true")