[SSSD] [sssd PR#936][opened] autofs: delete possible duplicate of an autofs entry

[pbrezina]

URL: https://github.com/SSSD/sssd/pull/936
Author: pbrezina
 Title: #936: autofs: delete possible duplicate of an autofs entry
Action: opened

PR body:
"""
Steps to reproduce:

1. Create the following autofs objects
```ldif
 dn: ou=auto.master,ou=autofs,dc=ldap,dc=vm objectClass:
automountMap objectClass: top ou: auto.master

dn: automountKey=/home,ou=auto.master,ou=autofs,dc=ldap,dc=vm objectClass:
automount objectClass: top automountInformation: auto.home automountKey:
/home

dn: ou=auto.home,ou=autofs,dc=ldap,dc=vm objectClass: automountMap
objectClass: top ou: auto.home

dn: automountKey=/home1,ou=auto.home,ou=autofs,dc=ldap,dc=vm objectClass:
automount objectClass: top automountInformation: home1 automountKey: /home1
```

2. Use e.g. the test tool to fetch the maps:
```
 ./autofs_test_client auto.master
 ./autofs_test_client auto.home -n /home1
```

3. Change automountInformation of /home1
``` dn: automountKey=/home1,ou=auto.home,ou=autofs,dc=ldap,dc=vm
objectClass: automount objectClass: top automountInformation: home1_1
automountKey: /home1
```

4. Run the test tool again:
```
./autofs_test_client auto.master
./autofs_test_client auto.home -n /home1
> error happens

```

It is important the `get entry by name is called` thus the `-n` parameter.

Resolves: https://pagure.io/SSSD/sssd/issue/4116
"""

To pull the PR as Git branch:
git remote add ghsssd https://github.com/SSSD/sssd
git fetch ghsssd pull/936/head:pr936
git checkout pr936