IOP services should be added to foreman.target

[sjha4]

Currently IoP services are not part of foreman.target..We should ideally be able to manage statuses of all these services with foreman.target.

[ianballou]

@jeremylenz @chris1984 @lfu do you have opinions here about foreman.target also restarting IoP? From the code it looks like foreman-maintain manages IoP services, so if we want foreman.target to be a replacement for that, it might make sense to include them here.

[jeremylenz]

foreman-maintain service restart restarted IoP services, so I see no reason why this also shouldn't.

[chris1984]

+1 to what @jeremylenz said, it should mirror what foreman-maintain service did

[sjha4]

Took a stab at it: #592