Description of problem:
heat service-list shows heat-engine processes down and in up status. 

Version-Release number of selected component (if applicable):
RHEL OSP 7 Kilo

How reproducible:
Everytime.

Steps to Reproduce:
1. Fresh installation of packstack or HA setup use "heat service-list" to check the status.

~~~
[root@allinone8 TEST(keystone_admin)]# heat service-list | awk -F"|" '/down/ {print $2,$(NF-1)}'
[root@allinone8 TEST(keystone_admin)]# heat service-list | awk -F"|" '/up/ {print $2,$(NF-1)}'
 hostname    status 
 allinone8   up     
 allinone8   up     
 allinone8   up     
 allinone8   up   
~~~

2. Restart the heat service using "openstack-service restart heat".

3. Check the status of heat-engine after sometime using "heat service-list"  it will be showing 

~~~
[root@allinone8 TEST(keystone_admin)]# heat service-list | awk -F"|" '/up/ {print $2,$(NF-1)}'
 hostname    status 
 allinone8   up     
 allinone8   up     
 allinone8   up     
 allinone8   up     
[root@allinone8 TEST(keystone_admin)]# heat service-list | awk -F"|" '/down/ {print $2,$(NF-1)}'
 allinone8   down   
 allinone8   down   
 allinone8   down   
 allinone8   down   
~~~

I am having 4 cores on my system hence 4 heat-engine processes are running.

Actual results:
It's showing both up and down status of heat-engine.

Expected results:
It should show only the up status of service and should show down only when the binary is really down.

Additional info:

I can see below discussion about the down status reason but it's better to fix this behaviour.

https://github.com/rcbops/rpc-openstack/issues/48