Description of problem:
ipa forwarder information not available after ipa-server upgrade.

Version-Release number of selected component (if applicable):
ipa-server-4.4.0-12.el7.x86_64

How reproducible:
Tried once

Steps to Reproduce:
1. Setup ipa server on RHEL 7.2.z.(In my case I ran command)
   #ipa-server-install --ip-address <ipa addr> -r testrelm.test -p 'password' -a 'password' --forwarder 10.x.x.x -U --setup-dns

2. Now setup latest repo links for RHEL 7.3
3. Update ipa server using command:
 # yum -y update 'ipa*' sssd
4. Now run command to verify forwarder details:
# ipa dnsserver-show `hostname`
# ipa dnsserver-find `hostname`
5. At server UI, verify the DNS forwarder details are available at server UI at path:
"Network Services > DNS > DNS Servers > "Server name" > Forwarders:"

Actual results:
1. After step4, 

# ipa dnsserver-find `hostname`
--------------------
1 DNS server matched
--------------------
Server name: ipaserver.testrelm.test
----------------------------
Number of entries returned 1
----------------------------
# ipa dnsserver-show `hostname`
Server name: ipaserver.testrelm.test


2. After step5, No Information available at "Network Services > DNS > DNS Servers > "Server name" > Forwarders:"

Expected results:
Forwarder server hostname or ip details should be correctly displayed after step4 and step5.


Additional info:
This issue is not observed in case of fresh install of ipa-server on latest version of RHEL i.e 7.3.