feature: support multiple ports like stream listen in http and https …

[tzssangglass]

…listen port. (#1195)

fix #1195

What this PR does / why we need it:

The Apache APISIX listens to a single port by default in http and https, this PR support multiple ports listen.

Pre-submission checklist:

• Did you explain what problem does this PR solve? Or what new features have been added?
• Have you added corresponding test cases?
• Have you modified the corresponding document?
• Is this PR backward compatible?

[membphis]

CI output:

+ ./bin/apisix init
lua: ./bin/apisix:887: attempt to call field 'new' (a nil value)
stack traceback:
	./bin/apisix:887: in function '?'
	./bin/apisix:1154: in main chunk
	[C]: ?
Error: Process completed with exit code 1.

[tzssangglass]

someone else can approved?

[tzssangglass]

someone else can approved?

[nic-chen]

need test case for change.

here is an example:

https://github.com/apache/apisix/blob/master/.travis/apisix_cli_test.sh#L156-L170

[membphis]

please take a look at the output of CI: https://github.com/apache/apisix/pull/2409/checks?check_run_id=1260519517#step:6:125

Scan detected 6 error(s) in 2 file(s):
Reading configuration file [.travis/ASF-Release.cfg]...
Scanning files starting at [./]...
Scan detected 6 error(s) in 2 file(s):
  [./FAQ.md]:
     279: line has trailing whitespace.
     287: line has trailing whitespace.
     289: line has trailing whitespace.
     298: line has trailing whitespace.
  [./FAQ_CN.md]:
     237: line has trailing whitespace.
     239: line has trailing whitespace.

[tzssangglass]

need test case for change.

here is an example:

https://github.com/apache/apisix/blob/master/.travis/apisix_cli_test.sh#L156-L170

ok, thx

[tzssangglass]

The last commit was on my company's virtual machine. Maybe it caused the security check to fail. In the evening I will submit from my own computer.