SELinux is blocking keepalived scripts

Issue

• Unable to run keepalived scripts with SELinux in Enforcing mode.

• SELinux AVC messages similar to the following are logged in /var/log/audit/audit.log:

  type=AVC msg=audit(1546871807.096:14299028): avc:  denied  { getattr } for  pid=87919 comm="pidof" path="/usr/sbin/haproxy-systemd-wrapper" dev="dm-0" ino=2297156 scontext=system_u:system_r:keepalived_t:s0 tcontext=system_u:object_r:haproxy_exec_t:s0 tclass=file permissive=0
  

  type=AVC msg=audit(01/21/2019 09:26:37.548:5455867) : avc:  denied  { getattr } for  pid=20569 comm=pidof path=/usr/libexec/postfix/pickup dev="dm-0" ino=406383 scontext=system_u:system_r:keepalived_t:s0 tcontext=system_u:object_r:postfix_pickup_exec_t:s0 tclass=file permissive=0
  

  type=AVC msg=audit(1548773332.351:1343): avc:  denied  { signull } for  pid=15336 comm="killall" scontext=system_u:system_r:keepalived_t:s0-s0:c0.c1023 tcontext=system_u:system_r:sshd_t:s0-s0:c0.c1023 tclass=process permissive=0