Adjusted lifetimes of member variables.
Adjusted lifetimes of member variables.

This correctly reflects the lifetime dependencies among
`Master::storage`, `Master::state` and `Master::registrar`.

Review: https://reviews.apache.org/r/45749/

asamerh4/mesos,reneploetz/mesos,Gilbert88/mesos,abudnik/mesos,asamerh4/mesos,yuquanshan/customizedMesos,kaysoky/mesos,Aman-Jain-14/customizedMesos,chhsia0/mesos,andschwa/mesos,zmalik/mesos,chhsia0/mesos,gsantovena/mesos,Gilbert88/mesos,Gilbert88/mesos,Aman-Jain-14/customizedMesos,kaysoky/mesos,craimbert/mesos,andschwa/mesos,zmalik/mesos,zmalik/mesos,abudnik/mesos,andschwa/mesos,zmalik/mesos,verizonlabs/mesos,craimbert/mesos,verizonlabs/mesos,abudnik/mesos,neilconway/mesos,gsantovena/mesos,kaysoky/mesos,verizonlabs/mesos,reneploetz/mesos,asamerh4/mesos,craimbert/mesos,craimbert/mesos,reneploetz/mesos,neilconway/mesos,neilconway/mesos,jpeach/mesos,andschwa/mesos,abudnik/mesos,chhsia0/mesos,reneploetz/mesos,Aman-Jain-14/customizedMesos,dforsyth/mesos,verizonlabs/mesos,yuquanshan/customizedMesos,asamerh4/mesos,andschwa/mesos,verizonlabs/mesos,kaysoky/mesos,Aman-Jain-14/customizedMesos,zmalik/mesos,verizonlabs/mesos,Gilbert88/mesos,zmalik/mesos,chhsia0/mesos,kaysoky/mesos,jpeach/mesos,asamerh4/mesos,gsantovena/mesos,neilconway/mesos,gsantovena/mesos,asamerh4/mesos,dforsyth/mesos,Aman-Jain-14/customizedMesos,gsantovena/mesos,reneploetz/mesos,abudnik/mesos,yuquanshan/customizedMesos,reneploetz/mesos,chhsia0/mesos,chhsia0/mesos,yuquanshan/customizedMesos,dforsyth/mesos,jpeach/mesos,craimbert/mesos,neilconway/mesos,yuquanshan/customizedMesos,chhsia0/mesos,gsantovena/mesos,yuquanshan/customizedMesos,gsantovena/mesos,dforsyth/mesos,jpeach/mesos,zmalik/mesos,Gilbert88/mesos,jpeach/mesos,dforsyth/mesos,jpeach/mesos,reneploetz/mesos,neilconway/mesos,jpeach/mesos,Gilbert88/mesos,kaysoky/mesos,Aman-Jain-14/customizedMesos,yuquanshan/customizedMesos,Gilbert88/mesos,Aman-Jain-14/customizedMesos,kaysoky/mesos,andschwa/mesos,asamerh4/mesos,neilconway/mesos,abudnik/mesos,abudnik/mesos,craimbert/mesos,andschwa/mesos,craimbert/mesos,dforsyth/mesos,verizonlabs/mesos,dforsyth/mesos