ITS#9400 back-ldap: fix retry binds

Regression from fix for ITS#7403
3 jobs for master in 10 minutes and 7 seconds (queued for 1 second)
latest
Status Job ID Name Coverage
  Build
failed #2761
build-gnutls-mit-standalone-lloadd

00:09:55

passed #2759
build-no-threads-no-slapd

00:02:40

failed #2760
build-openssl-heimdal-lloadd

00:10:06

 
Name Stage Failure
failed
build-openssl-heimdal-lloadd Build
make[1]: *** [Makefile:284: test] Error 2
make[1]: Leaving directory '/builds/tsaarni/openldap/tests'
make: *** [Makefile:296: test] Error 2
Uploading artifacts for failed job
Uploading artifacts...
tests/testrun/: found 20 matching files and directories

Uploading artifacts as "archive" to coordinator... ok
id=2760 responseStatus=201 Created token=Nz8r9KLu
Cleaning up file based variables
ERROR: Job failed: exit code 1
failed
build-gnutls-mit-standalone-lloadd Build
make[1]: Leaving directory '/builds/tsaarni/openldap/tests'
make[1]: *** [Makefile:284: test] Error 2
make: *** [Makefile:296: test] Error 2
Uploading artifacts for failed job
Uploading artifacts...
tests/testrun/: found 20 matching files and directories

Uploading artifacts as "archive" to coordinator... ok
id=2761 responseStatus=201 Created token=ZdsGPDaf
Cleaning up file based variables
ERROR: Job failed: exit code 1