[sssd PR#918][comment] Add support for NSS hosts database lookup.

[sumit-bose]

URL: https://github.com/SSSD/sssd/pull/918
Title: #918: Add support for NSS hosts database lookup.

sumit-bose commented:
"""
Hi @scabrero,

thank you very much for this substantial contribution.

May I asked you to fix the Python pep8 issues identified by the CI test so that the other CI tests can be run?

For your convenience I add them here as well:

```
Start: Mon Oct 28 15:41:33 UTC 2019
+ find . -path ./src/config -prune -o -name '*.py' -exec pep8 --ignore=E121,E123,E126,E226,E24,E704,W503,W504,W605,E722 '{}' +
./src/tests/intg/ds_openldap.py:278:80: E501 line too long (84 > 79 characters)
./src/tests/intg/test_resolver.py:37:1: E265 block comment should start with '# '
./src/tests/intg/test_resolver.py:41:1: E302 expected 2 blank lines, found 1
./src/tests/intg/test_resolver.py:77:80: E501 line too long (84 > 79 characters)
./src/tests/intg/test_resolver.py:208:32: E251 unexpected spaces around keyword / parameter equals
./src/tests/intg/test_resolver.py:208:34: E251 unexpected spaces around keyword / parameter equals
./src/tests/intg/test_resolver.py:213:32: E251 unexpected spaces around keyword / parameter equals
./src/tests/intg/test_resolver.py:213:34: E251 unexpected spaces around keyword / parameter equals
./src/tests/intg/sssd_hosts.py:31:1: E302 expected 2 blank lines, found 1
./src/tests/intg/sssd_hosts.py:38:1: E302 expected 2 blank lines, found 1
./src/tests/intg/sssd_nss.py:32:1: E302 expected 2 blank lines, found 1
./src/tests/intg/sssd_nss.py:51:1: E302 expected 2 blank lines, found 1
./src/tests/intg/sssd_nss.py:60:1: E302 expected 2 blank lines, found 1
./src/tests/intg/sssd_nss.py:70:1: E302 expected 2 blank lines, found 1
./src/tests/intg/ldap_ent.py:150:26: E201 whitespace after '('
./src/tests/intg/ldap_ent.py:150:57: E202 whitespace before ')'
End: Mon Oct 28 15:41:36 UTC 2019
```

bye,
Sumit 
"""

See the full comment at https://github.com/SSSD/sssd/pull/918#issuecomment-547020549