MB-3415: Retry on restore collision.
MB-3415: Retry on restore collision.

This leaves a small window where the first writes to a table could
potentially be lost if we try to recreate a table that already exists,
but that can only happen if the table is created right at join time
and will only affect local_content tables since those are the only
ones we restore.

Change-Id: Id8d209477b50257aeb31aa805211665bb14a03a3
Reviewed-on: http://review.membase.org/4453
Reviewed-by: Aliaksey Kandratsenka <340b8e09ca65cd3fc686427fcfed17e87eaf61e2@gmail.com>
Tested-by: Aliaksey Kandratsenka <340b8e09ca65cd3fc686427fcfed17e87eaf61e2@gmail.com>

nimishzynga/ns_server,vzasade/ns_server,vzasade/ns_server,pavel-blagodov/ns_server,vzasade/ns_server,pavel-blagodov/ns_server,ceejatec/ns_server,nimishzynga/ns_server,pavel-blagodov/ns_server,membase/ns_server,ceejatec/ns_server,mschoch/ns_server,mschoch/ns_server,mschoch/ns_server,nimishzynga/ns_server,ceejatec/ns_server,membase/ns_server,membase/ns_server,t3rm1n4l/ns_server,mschoch/ns_server,nimishzynga/ns_server,daverigby/ns_server,mschoch/ns_server,mschoch/ns_server,nimishzynga/ns_server,t3rm1n4l/ns_server,ceejatec/ns_server,ceejatec/ns_server,daverigby/ns_server,pavel-blagodov/ns_server,membase/ns_server,nimishzynga/ns_server,t3rm1n4l/ns_server,ceejatec/ns_server,membase/ns_server,t3rm1n4l/ns_server,vzasade/ns_server,daverigby/ns_server,daverigby/ns_server,membase/ns_server,t3rm1n4l/ns_server,daverigby/ns_server