Add systemd unit file for astute
Add sysconfig file for astute with systemd
Upgrade spec file to support CentOS7
Blueprint: master-on-centos7
Is NOT compatible with centos 6 because in our build cases yum-builddep on ubuntu doesn't reveal rhel macros
Change-Id: Iefd9c574499a4f0022f8bbef6dc64fa04d4d2a7a