Fix x-forwarded-port mapping

[aledbf]

replaces #86

$ curl  localhost -H 'Host: foo-98.bar.com'
CLIENT VALUES:
client_address=10.2.9.2
command=GET
real path=/
query=nil
request_version=1.1
request_uri=http://foo-98.bar.com:8080/

SERVER VALUES:
server_version=nginx: 1.9.11 - lua: 10001

HEADERS RECEIVED:
accept=*/*
connection=close
host=foo-98.bar.com
user-agent=curl/7.50.2
x-forwarded-for=::ffff:10.2.9.1
x-forwarded-host=foo-98.bar.com
x-forwarded-port=80
x-forwarded-proto=http
x-real-ip=::ffff:10.2.9.1
BODY:
-no body in request-

$ curl  localhost -H 'Host: foo-98.bar.com' -H 'x-forwarded-port: 81'
CLIENT VALUES:
client_address=10.2.9.2
command=GET
real path=/
query=nil
request_version=1.1
request_uri=http://foo-98.bar.com:8080/

SERVER VALUES:
server_version=nginx: 1.9.11 - lua: 10001

HEADERS RECEIVED:
accept=*/*
connection=close
host=foo-98.bar.com
user-agent=curl/7.50.2
x-forwarded-for=::ffff:10.2.9.1
x-forwarded-host=foo-98.bar.com
x-forwarded-port=81
x-forwarded-proto=http
x-real-ip=::ffff:10.2.9.1
BODY:
-no body in request-

$ curl  localhost -H 'Host: foo-98.bar.com' -H 'x-forwarded-port: 442'
CLIENT VALUES:
client_address=10.2.9.2
command=GET
real path=/
query=nil
request_version=1.1
request_uri=http://foo-98.bar.com:8080/

SERVER VALUES:
server_version=nginx: 1.9.11 - lua: 10001

HEADERS RECEIVED:
accept=*/*
connection=close
host=foo-98.bar.com
user-agent=curl/7.50.2
x-forwarded-for=::ffff:10.2.9.1
x-forwarded-host=foo-98.bar.com
x-forwarded-port=443
x-forwarded-proto=http
x-real-ip=::ffff:10.2.9.1
BODY:
-no body in request-

$ curl  localhost -H 'Host: foo-98.bar.com' -H 'x-forwarded-port: 9000'
CLIENT VALUES:
client_address=10.2.9.2
command=GET
real path=/
query=nil
request_version=1.1
request_uri=http://foo-98.bar.com:8080/

SERVER VALUES:
server_version=nginx: 1.9.11 - lua: 10001

HEADERS RECEIVED:
accept=*/*
connection=close
host=foo-98.bar.com
user-agent=curl/7.50.2
x-forwarded-for=::ffff:10.2.9.1
x-forwarded-host=foo-98.bar.com
x-forwarded-port=9000
x-forwarded-proto=http
x-real-ip=::ffff:10.2.9.1
BODY:
-no body in request-

[k8s-reviewable]

This change is 

[coveralls]

Changes Unknown when pulling 3b4358b on aledbf:fix-x-forwarded-port into ** on kubernetes:master**.

[aledbf]

self merge to fix error en template that avoids the start of the controller