Bug 1281687

Description of problem:
Trying to update host using hammer utility fails on realm.
From webui works fine.

Version-Release number of selected component (if applicable):
rubygem-hammer_cli-0.1.4.13-1.el7sat.noarch

How reproducible:
Always

Steps to Reproduce:
1. Satellite 6.1 with realm configured
2. Try to update host using hammer.

# hammer host update --id comp-st-060 --managed yes --hostgroup-id 12
Could not update the host:
  Failed to create example.com's realm entry: ERF12-5287 [ProxyAPI::ProxyException]: Unable to create realm entry ([RestClient::BadRequest]: 400 Bad Request) for proxy https://satellite.example.com:9090/realm/INT.ACI.ICS.PSU.EDU

3. Language settings on satellite server.
# env |grep -i lang
LANG=en_US.UTF-8
LANGUAGE=

# locale
LANG=en_US.UTF-8
LC_CTYPE="en_US.UTF-8"
LC_NUMERIC="en_US.UTF-8"
LC_TIME="en_US.UTF-8"
LC_COLLATE="en_US.UTF-8"
LC_MONETARY="en_US.UTF-8"
LC_MESSAGES="en_US.UTF-8"
LC_PAPER="en_US.UTF-8"
LC_NAME="en_US.UTF-8"
LC_ADDRESS="en_US.UTF-8"
LC_TELEPHONE="en_US.UTF-8"
LC_MEASUREMENT="en_US.UTF-8"
LC_IDENTIFICATION="en_US.UTF-8"
LC_ALL=

# runuser - postgres -c "psql -l"
                                   List of databases
    Name    |  Owner   | Encoding |   Collate   |    Ctype    |    Access privileges    
------------+----------+----------+-------------+-------------+-------------------------
 candlepin  | postgres | UTF8     | en_US.UTF-8 | en_US.UTF-8 | =T/postgres            +
            |          |          |             |             | postgres=CTc/postgres  +
            |          |          |             |             | candlepin=CTc/postgres
 foreman    | foreman  | UTF8     | en_US.UTF-8 | en_US.UTF-8 | =T/foreman             +
            |          |          |             |             | foreman=CTc/foreman
 gutterball | postgres | UTF8     | en_US.UTF-8 | en_US.UTF-8 | =T/postgres            +
            |          |          |             |             | postgres=CTc/postgres  +
            |          |          |             |             | gutterball=CTc/postgres
 postgres   | postgres | UTF8     | en_US.UTF-8 | en_US.UTF-8 | 
 template0  | postgres | UTF8     | en_US.UTF-8 | en_US.UTF-8 | =c/postgres            +
            |          |          |             |             | postgres=CTc/postgres
 template1  | postgres | UTF8     | en_US.UTF-8 | en_US.UTF-8 | =c/postgres            +
            |          |          |             |             | postgres=CTc/postgres
(6 rows)


Actual results:
host update fails at first attempt

Expected results:
host should get updated without any error