improve stream testing script (#2549)

* merge testContent.sh into ocContent.sh

* detect ffmpeg

ffmpeg or ffmpeg.exe in path, current dir, or parent dir

* use ocTestStream in api test

* enable verbose logging for api tests

* log ffmpeg version

* change ffmpeg lookup order

* set path properly for using the local ffmpeg

* rm double space from transcoder error logs

* update tests for new video stream

do not test bitrate

* set test stream target to 127.0.0.1

* log ffmpeg path

* update ffmpeg to v4.4.1

* improve logs

* fix ffmpeg installer script

* fix api test runner

* fix logs

* install fonts

* cleanup

* use ocTestStream.sh for all automated tests

* cleanup ocTestStream.sh

* cleanup test/automated/hls/run.sh

* Fix misspell

* fix ffmpeg installer in automated test runners

* spell fix

* cleanup script

* rev quick api tests

* cleanup tmp paths properly in automated tests

* rm unused ffmpeg package

* cleanup

* fix s3 test

* cache ffmpeg bin for automated tests

* shellcheck allow source

* rm missplaced file if backup fails

* use ffmpeg full path

* set lookup path for shellcheck

Earthfile

@@ -133,7 +133,7 @@ unit-tests:
 
 api-tests:
 	FROM --platform=linux/amd64 bdwyertech/go-crosscompile
-	RUN apk add ffmpeg npm
+	RUN apk add npm font-noto && fc-cache -f
   COPY . /build
 	WORKDIR /build/test/automated/api
 	RUN npm install