Sprinkle 'pylint disable' comments over the code base to silence a bunch
of pylint warnings on Python 3. All silenced warnings are harmless and
not bugs.

https://fedorahosted.org/freeipa/ticket/4985

Signed-off-by: Christian Heimes <cheimes@redhat.com>
Reviewed-By: Martin Basti <mbasti@redhat.com>

* ipca-ca-install: Use a single ldap connection for the entire
    script. Connecting with ccache in promote is not needed.
* ipa-cacert-manage: Always connect to ldap, since renew and install
    are the only options and renew seems to need ldap connection even
    for self signed certificates.
* ipa-compat-manage: Use one ldap connection for the entire script.
    Replaced try-finally with proper disconnect, code block reindented.
* ipa-csreplica-manage: Properly establish and close the ldap connection.
* ipa-dns-install: Proper connect, disconnect to ldap.
* ipa-kra-install: Proper connect/disconnect for install and uninstall.
* ipa-ldap-update: Proper connect and disconnect to ldap.
* ipa-nis-manage: Proper connect/disconnect for ldap. Try-finally removed
    and code block reindented.
* ipa-replica-manage: Proper connect/disconnect to ldap.
* ipa-replica-prepare: Connect added to validate_options(), where api is
    initialized and disconnected added at the end of run. Reconnect in
    ask_for_options() to validate directory manager password.
* ipa-server-certinstall: Use api.Backend.ldap2 for ldap connections.
* ipa-server-upgrade: Connect to and disconnect from api.Backend.ldap2.

https://fedorahosted.org/freeipa/ticket/6461

Reviewed-By: Martin Basti <mbasti@redhat.com>
Reviewed-By: Jan Cholasta <jcholast@redhat.com>

* move IPAdmin methods to LDAPClient
* add extra arguments (cacert, sasl_nocanon) to LDAPClient.__init__()
* add host, port, _protocol to LDAPClient (parsed from ldap_uri)
* create get_ldap_uri() method to create ldap_uri from former
    IPAdmin.__init__() arguments
* replace IPAdmin with LDAPClient + get_ldap_uri()
* remove ununsed function argument hostname from
    enable_replication_version_checking()

https://fedorahosted.org/freeipa/ticket/6461

Reviewed-By: Martin Basti <mbasti@redhat.com>
Reviewed-By: Jan Cholasta <jcholast@redhat.com>

* Rename do_sasl_gssapi_bind to gssapi_bind

https://fedorahosted.org/freeipa/ticket/6461

Reviewed-By: Martin Basti <mbasti@redhat.com>
Reviewed-By: Jan Cholasta <jcholast@redhat.com>

* Use LDAPClient.simple_bind instead of extra call to IPAdmin.do_simple_bind
* Rename binddn to bind_dn
* Rename bindpw to bind_password
* Explicitly specify bind_dn in all calls

https://fedorahosted.org/freeipa/ticket/6461

Reviewed-By: Martin Basti <mbasti@redhat.com>
Reviewed-By: Jan Cholasta <jcholast@redhat.com>

Enables check and fixes one issue.
get_entries can be replaced by get_entry, filter is not needed because
check of 'originfilter' attribute is done later.

Reviewed-By: Martin Babinsky <mbabinsk@redhat.com>

Wildcard imports should not be used.

Check for wildcard imports has been enabled in pylint.
Pylint note: options 'wildcard-import' causes too much false positive
results, so instead it I used 'unused-wildcard-import' option which has almost
the same effect.

Reviewed-By: Jan Cholasta <jcholast@redhat.com>

This patch removes unused imports, alse pylint has been configured to
check unused imports.

Reviewed-By: Jan Cholasta <jcholast@redhat.com>

In Python 3, `print` is no longer a statement. Call it as a function
everywhere, and include the future import to remove the statement
in Python 2 code as well.

Reviewed-By: Christian Heimes <cheimes@redhat.com>
Reviewed-By: Jan Cholasta <jcholast@redhat.com>

The 'as' syntax works from Python 2 on, and Python 3 will
drop the "comma" syntax.

Reviewed-By: Tomas Babej <tbabej@redhat.com>