ipa otptoken-sync has two bugs. It has not been ported to Python 3 correctly. Any sync attempt fails with a TypeError. The token parameter is not working correctly, too.

This bug is created as a clone of upstream ticket:
https://pagure.io/freeipa/issue/7804

### Issue
When synchronizing a token using `ipa otptoken-sync`, incorrect parameters to the invocation properly fail, but correct parameters give a stack trace.

#### Steps to Reproduce
1. Follow steps in https://bugzilla.redhat.com/show_bug.cgi?id=1217009#c11

#### Actual behavior
```
[root@freeipa-vpn-0 /]# ipa otptoken-sync 752f744e-1879-4499-a9c5-8932f739d26a
User ID: player1
Password: 
First Code: 
Second Code: 
ipa: ERROR: non-public: AttributeError: 'NoneType' object has no attribute 'name'
Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/ipalib/backend.py", line 139, in execute
    result = self.Command[_name](*args, **options)
  File "/usr/lib/python2.7/site-packages/ipalib/frontend.py", line 447, in __call__
    return self.__do_call(*args, **options)
  File "/usr/lib/python2.7/site-packages/ipalib/frontend.py", line 475, in __do_call
    ret = self.run(*args, **options)
  File "/usr/lib/python2.7/site-packages/ipalib/frontend.py", line 1199, in run
    return self.forward(*args, **options)
  File "/usr/lib/python2.7/site-packages/ipaclient/plugins/otptoken.py", line 168, in forward
    query['token'] = DN((obj.primary_key.name, args[0]),
AttributeError: 'NoneType' object has no attribute 'name'
ipa: ERROR: an internal error has occurred
```

#### Expected behavior
As in the example, a result of `Token synchronized.`

#### Version/Release/Distribution
```
[root@ns-0 /]# rpm -q freeipa-server freeipa-client ipa-server ipa-client 389-ds-base pki-ca krb5-server
package freeipa-server is not installed
package freeipa-client is not installed
ipa-server-4.6.4-10.el7.centos.x86_64
ipa-client-4.6.4-10.el7.centos.x86_64
389-ds-base-1.3.8.4-18.el7_6.x86_64
pki-ca-10.5.9-6.el7.noarch
krb5-server-1.15.1-34.el7.x86_64
```

#### Additional info:
Behavior was confirmed by @frenaud in https://lists.fedorahosted.org/archives/list/freeipa-users%40lists.fedorahosted.org/thread/EKJLQ3NASR6MYRT6QPD3LNFUEVEIFJHL/