Description of problem:
I just tried to set the hostname to "a b.c.d" and ended up with these results:

        new value for Hostname
        a b.c.d
        Usage: hostname [-b] {hostname|-F file}         set host name (from file)
               hostname [-a|-A|-d|-f|-i|-I|-s|-y]       display formatted name
               hostname                                 display host name

               {yp,nis,}domainname {nisdomain|-F file}  set NIS domain name (from file)
               {yp,nis,}domainname                      display NIS domain name

               dnsdomainname                            display dns domain name

               hostname -V|--version|-h|--help          print info and exit

        Program name:
               {yp,nis,}domainname=hostname -y
               dnsdomainname=hostname -d 
    
        Program options:
            -a, --alias            alias names
            -A, --all-fqdns        all long host names (FQDNs)
            -b, --boot             set default hostname if none available
            -d, --domain           DNS domain name
            -f, --fqdn, --long     long host name (FQDN)
            -F, --file             read host name or NIS domain name from given file
            -i, --ip-address       addresses for the host name
            -I, --all-ip-addresses all addresses for the host
            -s, --short            short host name
            -y, --yp, --nis        NIS/YP domain name
   
        Description:
           This command can get or set the host name or the NIS domain name. You can
           also get the DNS domain or the FQDN (fully qualified domain name).
           Unless you are using bind or NIS for host lookups you can change the
           FQDN (Fully Qualified Domain Name) and the DNS domain name (which is
           part of the FQDN) in the /etc/hosts file.
        Warning: Could not set hostname: false
        Hostname configuration updated!

Note, the hostname command was ran, it failed but its says the hostname configuration was updated properly.   Additionally its not catching the that there are spaces in the domain to begin with.   Really the hostname command never should have been ran at all.



Version-Release number of selected component (if applicable):
QCI-1.1-RHEL-7-20161209.t.0

How reproducible:
Always

Steps to Reproduce:
1.  Install the QCI ISO.
2.  Start the system.
3.  Login
4.  When you can set the hostname in the fusor installer set it to a hostname
    with a space in it.

Actual results:
As above with the error output from hostname.

Expected results:
It to catch that there was a problem with the hostname before it passes it to
an external command.   Or at least not to see the external commands output, but the error acknowledged.