default restore target and explicit recovery target action

[gsmolk]

When restoring ARCHIVE backup it is possible to get the following error:

pg_probackup restore -B $HOME/backup_catalog --instance node --recovery-target-action=promote

ERROR: The '--recovery-target-action' option can be applied only when either of '--recovery-target', '--recovery-target-time', '--recovery-target-xid', '--recovery-target-lsn' or '--recovery-target-name' options is specified

Adding the --recovery-target=latest option solves the problem
Reported by Alexey Shishkin.