Fix failing CI tests (roles) due to slow import

[tbordaz]

Issue Description
Tests test_managed_and_filtered_role_rewrite and test_not_such_entry_role_rewrite are importing 90K entries.
In CI tests import can be less than 800 entries/s that requires more time

Package Version and Platform:
All branches where those tests exist

Steps to Reproduce
Steps to reproduce the behavior:
run those tests

Expected results
CI should not fail

[tbordaz]

cbb9e0e..b0fc468 main
2aae8d5..d9969d0 389-ds-base-3.0
091e033..03027fb 389-ds-base-2.5
6c97fcc..eba10aa 389-ds-base-2.4
72993ba..d15daeb 389-ds-base-2.3
809aa4b..82b7793 389-ds-base-2.2
65f80a0..55facad 389-ds-base-2.1
9da7f1e..8530ba3 389-ds-base-2.0
f6ddef9..154b580 389-ds-base-1.4.4
cb5554d..31c0fe6 389-ds-base-1.4.3

[tbordaz]

PR was #6337