Get online live stream list improvement

Breaking Changes

• liveStreamOnlineList() first two parameter is now appName and streamName

Added

• Add phpunit.xml.dist file
• Add appName and streamName filter for liveStreamOnlineList()

Changes

• Update .gitignore to ignore phpunit.xml

Fixed

• Incorrect stream_urls returned when beautifying the response

Removed

• Remove phpunit.xml file
• Remove unused phpunit.xml env variable
• Remove getEnvironmentSetUp() from TestCase