repair: Move local_is_initialized checks up the stack
repair: Move local_is_initialized checks up the stack

The sys-dist-ks and view-update-generator checked are global pointers
and are performed inside static repair_meta's method. At the same
time the caller of this method is repair_service class which already
has both on-board, so move the checks up. Later they will use the
service-local references, not global pointers.

Signed-off-by: Pavel Emelyanov <c9a32589e048e044184536f7ac71ef92fe82df3e@scylladb.com>

scylladb/scylla,scylladb/scylla,scylladb/scylla,scylladb/scylla