Add TLS certificate chain support with OpenSSL #1076

	name: Build without WebSocket
	on:
	push:
	branches:
	- master
	pull_request:
	branches:
	- master
	jobs:
	build-nowebsocket:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2
	- name: install packages
	run: sudo apt update && sudo apt install libssl-dev libsrtp2-dev
	- name: submodules
	run: git submodule update --init --recursive --depth 1
	- name: cmake
	run: cmake -B build -DNO_WEBSOCKET=1 -DUSE_SYSTEM_SRTP=1 -DWARNINGS_AS_ERRORS=1
	- name: make
	run: (cd build; make -j2)
	- name: test
	run: ./build/tests

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