It is useful to distinguish if the repair is a regular repair or used
for node operations.
In addition, log the keyspace and tables are repaired.
Fixes#7086
Currently, replace and bootstrap share the same streaming reason,
stream_reason::bootstrap, because they share most of the code
in boot_strapper.
In order to distinguish the two, we need to introduce a new stream
reason, stream_reason::replace. It is safe to do so in a mixed cluster
because current code only check if the stream_reason is
stream_reason::repair.
Refs: #6351
On receiving a mutation_fragment or a mutation triggered by a streaming
operation, we pass an enum stream_reason to notify the receiver what
the streaming is used for. So the receiver can decide further operation,
e.g., send view updates, beyond applying the streaming data on disk.
Fixes#3276
Message-Id: <f15ebcdee25e87a033dcdd066770114a499881c0.1539498866.git.asias@scylladb.com>