Tests in ubuntu_qrt_kernel_security (021, 022) complains about ASLR not functional on Trusty ARM64

This was reported in bug 1630000
I think it's better it tear it down into pieces.

 FAIL: test_021_aslr_dapper_libs (__main__.KernelSecurityTest)
 ASLR of libs
 ----------------------------------------------------------------------
 Traceback (most recent call last):
   File "./test-kernel-security.py", line 1832, in test_021_aslr_dapper_libs
     self._test_aslr('libs', expected)
   File "./test-kernel-security.py", line 1795, in _test_aslr
     self._test_aslr_all(area, expected, "unlimited stack %s" % area)
   File "./test-kernel-security.py", line 1772, in _test_aslr_all
     self._test_aslr_exec(area, expected, target, name)
   File "./test-kernel-security.py", line 1765, in _test_aslr_exec
     self.assertShellExitEquals(aslr_expected, ["./%s" % (target), area, "--verbose"], msg="%s:\n" % name)
   File "/home/ubuntu/autotest/client/tmp/ubuntu_qrt_kernel_security/src/qa-regression-testing/scripts/testlib.py", line 1134, in assertShellExitEquals
     self.assertEqual(expected, rc, msg + result + report)
 AssertionError: unlimited stack libs native:
 Got exit code 1, expected 0
 Command: './aslr', 'libs', '--verbose'
 Output:
 Checking ASLR of libs:
  0x0000200002f130
  0x0000200002f130
  0x0000200002f130
 FAIL: ASLR not functional (libs always at 0x0000200002f130)

 ======================================================================
 FAIL: test_021_aslr_dapper_mmap (__main__.KernelSecurityTest)
 ASLR of mmap
 ----------------------------------------------------------------------
 Traceback (most recent call last):
   File "./test-kernel-security.py", line 1817, in test_021_aslr_dapper_mmap
     self._test_aslr('mmap', expected)
   File "./test-kernel-security.py", line 1795, in _test_aslr
     self._test_aslr_all(area, expected, "unlimited stack %s" % area)
   File "./test-kernel-security.py", line 1772, in _test_aslr_all
     self._test_aslr_exec(area, expected, target, name)
   File "./test-kernel-security.py", line 1765, in _test_aslr_exec
     self.assertShellExitEquals(aslr_expected, ["./%s" % (target), area, "--verbose"], msg="%s:\n" % name)
   File "/home/ubuntu/autotest/client/tmp/ubuntu_qrt_kernel_security/src/qa-regression-testing/scripts/testlib.py", line 1134, in assertShellExitEquals
     self.assertEqual(expected, rc, msg + result + report)
 AssertionError: unlimited stack mmap native:
 Got exit code 1, expected 0
 Command: './aslr', 'mmap', '--verbose'
 Output:
 Checking ASLR of mmap:
  0x0000200018e010
  0x0000200018e010
  0x0000200018e010
 FAIL: ASLR not functional (mmap always at 0x0000200018e010)

 ======================================================================
 FAIL: test_022_aslr_hardy_vdso (__main__.KernelSecurityTest)
 ASLR of vdso
 ----------------------------------------------------------------------
 Traceback (most recent call last):
   File "./test-kernel-security.py", line 1863, in test_022_aslr_hardy_vdso
     self._test_aslr('vdso', expected)
   File "./test-kernel-security.py", line 1795, in _test_aslr
     self._test_aslr_all(area, expected, "unlimited stack %s" % area)
   File "./test-kernel-security.py", line 1772, in _test_aslr_all
     self._test_aslr_exec(area, expected, target, name)
   File "./test-kernel-security.py", line 1765, in _test_aslr_exec
     self.assertShellExitEquals(aslr_expected, ["./%s" % (target), area, "--verbose"], msg="%s:\n" % name)
   File "/home/ubuntu/autotest/client/tmp/ubuntu_qrt_kernel_security/src/qa-regression-testing/scripts/testlib.py", line 1134, in assertShellExitEquals
     self.assertEqual(expected, rc, msg + result + report)
 AssertionError: unlimited stack vdso native:
 Got exit code 1, expected 0
 Command: './aslr', 'vdso', '--verbose'
 Output:
 Checking ASLR of vdso:
  0x0000200001c000
  0x0000200001c000
  0x0000200001c000
 FAIL: ASLR not functional (vdso always at 0x0000200001c000)

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.13.0-141-generic 3.13.0-141.190
ProcVersionSignature: User Name 3.13.0-141.190-generic 3.13.11-ckt39
Uname: Linux 3.13.0-141-generic aarch64
NonfreeKernelModules: signpost
AlsaDevices: Error: command ['ls', '-l', '/dev/snd/'] failed with exit code 2: ls: cannot access /dev/snd/: No such file or directory
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay'
ApportVersion: 2.14.1-0ubuntu3.27
Architecture: arm64
ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord'
CRDA: Error: [Errno 2] No such file or directory: 'iw'
CurrentDmesg:

Date: Wed Feb 7 06:51:21 2018
Lsusb: Error: command ['lsusb'] failed with exit code 1: unable to initialize libusb: -99
PciMultimedia:

ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcFB:

ProcKernelCmdLine: console=ttyS0,9600n8r ro
RelatedPackageVersions:
 linux-restricted-modules-3.13.0-141-generic N/A
 linux-backports-modules-3.13.0-141-generic N/A
 linux-firmware 1.127.24
RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)