Fix reboot on fedora like nodes

This change enables httpd in systemd so that it
starts after a reboot and updates how selinux is
disabled to use /etc/selinux/config in addtion
to setenforce.

Change-Id: I5ea8693c0b967937483bd921b1d9984ea14bc723
diff --git a/lib/apache b/lib/apache
index dd8c9a0..771a7d7 100644
--- a/lib/apache
+++ b/lib/apache
@@ -150,6 +150,8 @@
     elif is_fedora; then
         sudo rm -f /etc/httpd/conf.d/000-*
         install_package httpd python3-mod_wsgi
+        # rpm distros dont enable httpd by default so enable it to support reboots.
+        sudo systemctl enable httpd
         # For consistency with Ubuntu, switch to the worker mpm, as
         # the default is event
         sudo sed -i '/mod_mpm_prefork.so/s/^/#/g' /etc/httpd/conf.modules.d/00-mpm.conf