Description of problem:
When verifying bug 751597, saw the issue below - 
When installing using a new hostname, specify a domain name that is not resolvable, and the install starts. It fails later at the step when configuring named. But installer should have caught this, and not started the install.

If the domain name of the host isn't resolvable OR the zone being created for IPA then we can fail
https://fedorahosted.org/freeipa/ticket/2602 was opened when working on bug 751597.

Version-Release number of selected component (if applicable):
ipa-server-2.2.0-7.el6.x86_64

How reproducible:
always

Steps to Reproduce:
1. Install ipaserver as:
ipa-server-install --setup-dns --forwarder=10.14.63.12 --hostname
ipaserver.testrelm.com -r TESTRELM.COM -n testrelm -p Secret123 -P Secret123 -a
Secret123 --ip-address 10.16.96.50
where
# hostname
margo.testrelm.com
# cat /etc/sysconfig/network
NETWORKING=yes
HOSTNAME=margo.testrelm.com
# cat /etc/hosts
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
#10.16.96.50 margo.testrelm.com margo
# cat /etc/resolv.conf
; generated by /sbin/dhclient-script
search idm.lab.bos.redhat.com
nameserver 10.16.78.150

Actual results:
Install fails with:
Configuration of client side components failed!

Expected results:
If domain name is not resolvable, installer should have caught it, and not started the install.

Additional info:
Failed with:
Configuring named:
  [1/9]: adding DNS container
  [2/9]: setting up our zone
  [3/9]: setting up reverse zone
  [4/9]: setting up our own record
  [5/9]: setting up kerberos principal
  [6/9]: setting up named.conf
  [7/9]: restarting named
  [8/9]: configuring named to start on boot
  [9/9]: changing resolv.conf to point to ourselves
done configuring named.

Global DNS configuration in LDAP server is empty
You can use 'dnsconfig-mod' command to set global DNS options that
would override settings in local named.conf files

Restarting the web server
Configuration of client side components failed!
ipa-client-install returned: Command '/usr/sbin/ipa-client-install --on-master
--unattended --domain testrelm --server ipaserver.testrelm.com --realm
TESTRELM.COM --hostname ipaserver.testrelm.com' returned non-zero exit status 1

/var/log/ipaserver-install.log has:
2012-04-02T14:39:16Z DEBUG Changing admin password
2012-04-02T14:39:16Z DEBUG args=/usr/bin/ldappasswd -h ipaserver.testrelm.com
-ZZ -x -D cn=Directory Manager -y /var/lib/ipa/tmpjjJRzL -T
/var/lib/ipa/tmp_K_Zxx uid=admin,cn=users,cn=accounts,dc=testrelm,dc=com
2012-04-02T14:39:16Z DEBUG stdout=
2012-04-02T14:39:16Z DEBUG stderr=
2012-04-02T14:39:16Z DEBUG ldappasswd done
2012-04-02T14:39:18Z DEBUG args=/usr/sbin/ipa-client-install --on-master
--unattended --domain testrelm --server ipaserver.testrelm.com --realm
TESTRELM.COM --hostname ipaserver.testrelm.com
2012-04-02T14:39:18Z DEBUG stdout=^[[?1034hDiscovery was successful!
Hostname: ipaserver.testrelm.com
Realm: TESTRELM.COM
DNS Domain: testrelm
IPA Server: ipaserver.testrelm.com
BaseDN: dc=testrelm,dc=com


Configured /etc/sssd/sssd.conf

2012-04-02T14:39:18Z DEBUG stderr=DNS domain 'testrelm.com' is not configured
for automatic KDC address lookup.
KDC address will be set to fixed value.

Traceback (most recent call last):
  File "/usr/sbin/ipa-client-install", line 1534, in <module>
    sys.exit(main())
  File "/usr/sbin/ipa-client-install", line 1521, in main
    rval = install(options, env, fstore, statestore)
  File "/usr/sbin/ipa-client-install", line 1358, in install
    api.Backend.xmlclient.connect()
  File "/usr/lib/python2.6/site-packages/ipalib/backend.py", line 63, in
connect
    conn = self.create_connection(*args, **kw)
  File "/usr/lib/python2.6/site-packages/ipalib/rpc.py", line 410, in
create_connection
    raise errors.KerberosError(major=str(krberr), minor='')
ipalib.errors.KerberosError: Kerberos error: Service u'HTTP'
not found in Kerberos database/