[yocto] [meta-selinux] Update announcement

[Mark Hatle]

I have pushed an update to meta-selinux to work with master.  A few key changes:

The oe-selinux and poky-selinux distro configurations HAVE BEEN REMOVED!  It is
now up to the user to enable the components using the appropriate
DISTRO_FEATURES as documented in the README file.  (acl xattr pam selinux)

The layer now requires meta-selinux as part of the 'setools' upgrade.  The tool
is now a python based tool.

SELinux componetns have been updated to version 2.7.

Refpolicy is at 2.20170204, git at master as of yesterday.

The README for the layer has been updated to include some additional information
about running the included images.

Changelog:

f1f0860 openssh: set ChallengeResponseAuthentication to no
24cce7b refpolicy: fix a typo in RDEPENDS
827b305 initscripts: use the 'i' option for restorecon command
eeb2c2f audit: fix the wrong packaging for auditd.service
2aadc0d audit 2.7.1 -> 2.7.6
beaaa37 attr: fix ptest failures when selinux enabled
232bfeb systemd: Remove inherit enable-selinux, obsolete
40a581d selinux: uprev include file to 20170804
3aafa96 libsepol: uprev to 2.7 (20170804)
375dfa6 libselinux: uprev to 2.7 (20170804)
b00974f libsemanage: uprev to 2.7 (20170804)
43adb0c checkpolicy: uprev to 2.7 (20170804)
f838032 secilc: uprev to 2.7 (20170804)
c9186be policycoreutils: uprev to 2.7 (20170804)
9b70823 sepolgen: remove package
d8d6ac6 mcstrans: add package 2.7 (20170804)
9a07ac8 restorecond: add package 2.7 (20170804)
a5b5f5b selinux-sandbox: add package 2.7 (20170804)
1d3df56 selinux-python: add package 2.7 (20170804)
17cda5a semodule-utils: add package 2.7 (20170804)
28b961c selinux-dbus: add package 2.7 (20170804)
a1f9832 selinux-gui: add package 2.7 (20170804)
493b567 policycoreutils: fixes for 2.7 uprev
fe8bc07 refpolicy_common: depends on semodule-utils-native
fdf7612 setools: uprev to 4.1.1
96b54b4 packagegroup-*: sync package names
2c7c0e9 selinux-python: add setools to RDEPENDS
8bd72df refpolicy-git: Update to lastest git version
694b8d1 README: Update and remove references to distros, replace w/ DISTRO_FEATURES
4fefe83 Refactor to conform to YP Compat requirements
6733785 README: Add information about running the system
dddf265 packagegroups: Fix LIC_FILES_CHKSUM
bca5c61 refpolicy: Add '/bin/bash.bash', an update-alternative to the policy
907e373 policycoreutils: Update fixfile