Update to support CentOS 8 selinux.

linux_health.te

-module linux_health 1.0;
+module linux_health 1.1;
 
 require {
 	type snmpd_t;
 	type root_t;
 	class file { setattr read create getattr write ioctl unlink open };
 	class dir { write remove_name add_name };
+	class capability dac_override;
 }
 
 #============= snmpd_t ==============
 
 allow snmpd_t root_t:dir { write remove_name add_name };
 allow snmpd_t root_t:file { setattr read create ioctl write getattr unlink open };
+allow snmpd_t self:capability dac_override;