auto-t: fix testEncryptedProfiles mtime check

Yet another weird UML quirk. The intent of this tests was to ensure
the profile gets encrypted, and to check this both the mtime and
contents of the profile were checked.

But under UML the profile is copied, IWD started, and the profile
is encrypted all without any time passing. The (same) mtime was
then updated without any changes which fails the mtime check.

This puts a sleep after copying the profile to ensure the system
time differs once IWD encrypts the profile.

autotests/testEncryptedProfiles/connection_test.py

@@ -6,6 +6,7 @@ import sys
 sys.path.append('../util')
 import iwd
 import os
+from time import sleep
 from iwd import IWD
 from iwd import NetworkType
 from iwd import PSKAgent
@@ -48,6 +49,8 @@ class Test(unittest.TestCase):
         mtime = os.path.getmtime('/tmp/iwd/' + 'ssidCCMP.psk')
         self.assertFalse(self.profile_is_encrypted('ssidCCMP.psk'))
 
+        sleep(1)
+
         wd = IWD(True)
 
         # Make sure profile was accepted