Bump Security Patch Level to 2018-05-01

Implemented Patches
===================
CVE-2017-13310  A-71992105      High        Change 214984
CVE-2017-13313  A-74114680      High        Change 214985
CVE-2017-13315  A-70721937      High        Change 214982
CVE-2017-13316  A-73311729      Moderate    Change 214983
CVE-2017-13319  A-71868329      High        Change 214986
CVE-2017-13320  A-72764648      High        Change 214987
CVE-2017-13323  A-73826242      Moderate    Change 214988
CVE-2017-13322  A-67862398      Moderate    Change 214989

Reference Version: 6.0

Change-Id: I645f2af604f833ba9d393a741f86170576b15ff1