[MESOS-1452] Improve Master::removeOffer to avoid further resource accounting bugs. - ASF JIRA

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We've had numerous bugs around resource accounting in the master due to the trickiness of removing offers in the Master code.

There are a few ways to improve this:

1. Add multiple offer methods to differentiate semantics:

useOffer(offerId);
rescindOffer(offerId);
discardOffer(offerId);

2. Add an enum to removeOffer to differentiate removal semantics:

removeOffer(offerId, USE);
removeOffer(offerId, RESCIND);
removeOffer(offerId, DISCARD);

is depended upon by

MESOS-9949 Track allocated/offered in the allocator's role tree.

relates to

MESOS-4553 Manage offers in allocator.