Fix / workaround for failing "ipa vault-retrieve":

        if raiseonerr and self.returncode:
            self.log.error('Exit code: %s', self.returncode)
>           raise subprocess.CalledProcessError(self.returncode, self.argv)
E           subprocess.CalledProcessError: Command '['ipa', 'vault-retrieve', 'ci_test_vault_master', '--password', 'password']' returned non-zero exit status 2.

Summary from PR communication:

This was increased to 90 seconds two years ago (and reverted) to address an issue with dogtag asking too early after archive operation. It said no vault found, even when vault archive operation returned success.

It was agreed that 15 sec increase (from "30" to "45") should be maximum and if the test is again unstable we should properly investigate why the replication is taking so long in this case.