Travis-CI does not work with SMPT server

[jakepeyser]

When running the server/tests/test_messaging_service.py test script in Travis-CI, it fails with the following output:

======================================================================
ERROR: test_send_email_success (__main__.SendEmailTestCase)
Does the send_email function return successfully?
----------------------------------------------------------------------
Traceback (most recent call last):
  File "server/tests/test_messaging_service.py", line 49, in test_send_email_success
    self.assertIsNone(messaging_service.send_email(test_email, subject, message, 'html'))
  File "/home/travis/build/IBM-Bluemix/logistics-wizard/server/services/messaging.py", line 75, in send_email
    server.ehlo()
  File "/opt/python/2.7.9/lib/python2.7/smtplib.py", line 413, in ehlo
    self.putcmd(self.ehlo_msg, name or self.local_hostname)
  File "/opt/python/2.7.9/lib/python2.7/smtplib.py", line 341, in putcmd
    self.send(str)
  File "/opt/python/2.7.9/lib/python2.7/smtplib.py", line 333, in send
    raise SMTPServerDisconnected('please run connect() first')
SMTPServerDisconnected: please run connect() first

We need to determine what is causing this failure and create a workaround so Travis can test the email sending successfully.

[jakepeyser]

Turns out there was leading white-space on the SMTP_SERVER env var, causing this issue:

$ export SMTP_SERVER= smtp.gmail.com
/home/travis/build.sh: line 45: export: `smtp.gmail.com': not a valid identifier

For context, this is apparently a larger Travis-CI issue that is still currently open. Removed white-space in 822e08e and problem has been fixed.