[SERVER-7829] Indexes are not maintained in oplog/profile capped collections - MongoDB Jira

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No indexes are updated on inserts (fast_oplog_insert does not update indexes).

> db.system.profile.ensureIndex({ns:1})

> db.system.profile.find({}).hint({ns:1}).explain()

	"cursor" : "BtreeCursor ns_1",

	"isMultiKey" : false,

	"n" : 8,

	... }

> db.system.profile.find({}).hint({ns:1}).explain()

	"cursor" : "BtreeCursor ns_1",

	"isMultiKey" : false,

	"n" : 8,

	... }

...

> db.system.profile.count()

...

> db.system.profile.count()

> db.system.profile.find({}).hint({ns:1}).explain()

	"cursor" : "BtreeCursor ns_1",

	"isMultiKey" : false,

	"n" : 8,

	... }

related to

SERVER-7107 Queries/getmores generate write lock stats in system.profile

SERVER-12201 do not allow index entries on local.oplog.*

SERVER-11611 remove DataFileMgr::insert*