store configuration in pwdCheckModuleArg in new ppolicy module

[davidcoutadeur]

TODO when the new openldap release is out with the new ppolicy module:
https:/mistotebe/openldap/tree/ppolicy10

store the ppm configuration into the pwdCheckModuleArg attribute.
Disable the ppm.conf file
Adapt the unit tests for using the new configuration format

[davidcoutadeur]

First piece of code published in branch pwdCheckModuleArg https:/ltb-project/ppm/tree/pwdCheckModuleArg

• Need to adapt the code to the new signature:
  check_password(char *pPasswd, char **ppErrStr, Entry *e, void *pArg)

• Need to check if 4th argument is present and use it.

[davidcoutadeur]

done