2123 Fix endpoint_url when use_apigateway is false

[jwilges]

Description

Update no longer raises an exception while updating endpoint_url with base_path when use_apigateway is False.

Further, when use_apigateway is False, update now also:

• amends deployed_string with endpoint_url (admittedly, Zappa's formatting for this could be improved)
• attempts to touch the endpoint based on Zappa's settings

GitHub Issues

See issue #2123 for more information and for further discussion.

[jwilges]

Hi @jneves, since you appear to be the sole life-blood for pull requests as of late, would you be able to take a look at this and let me know what you think?

I have deployed and tested this with our Lambdas by pinning:

"zappa@git+https://github.com/jwilges/Zappa@0.51.1.dev2"

I know this is probably annoying to check into, so I tried to provide a reasonable tag to pin and test against to make your life easier.

[coveralls]

Coverage increased (+0.1%) to 73.066% when pulling 1fed733 on jwilges:2123_fix_endpoint_url_when_use_apigateway_false into 93804a1 on Miserlou:master.