Wait for delay to provide interruption information
Wait for delay to provide interruption information

The RunWithLocks test assumed that gnt-debug delay would have the info
needed for interruption ready immediately after being run, and in some
situations this is not the case. This patch makes the test more patient
and forgiving by retrying a number of times.

Signed-off-by: Hrvoje Ribicic <riba@google.com>
Reviewed-by: Petr Pudlak <pudlak@google.com>
Signed-off-by: Thomas Thrainer <thomasth@google.com>
Reviewed-by: Helga Velroyen <helgav@google.com>

(cherry picked from commit fbab1c76fbf3e84aeb82ed28be7d30a491de3718)

dimara/ganeti,apyrgio/ganeti,ganeti/ganeti,bitemyapp/ganeti,mbakke/ganeti,apyrgio/snf-ganeti,yiannist/ganeti,yiannist/ganeti,grnet/snf-ganeti,andir/ganeti,ganeti-github-testing/ganeti-test-1,grnet/snf-ganeti,apyrgio/snf-ganeti,bitemyapp/ganeti,yiannist/ganeti,leshchevds/ganeti,leshchevds/ganeti,onponomarev/ganeti,ganeti/ganeti,onponomarev/ganeti,andir/ganeti,mbakke/ganeti,dimara/ganeti,ganeti-github-testing/ganeti-test-1,mbakke/ganeti,leshchevds/ganeti,ganeti/ganeti,apyrgio/ganeti,andir/ganeti