Patch 2

[Nik-Shalashov]

No description provided.

[seanheinrichs]

Thank you. I hope this gets merged as all of the samples in our repo are broken. I ported this change over to our codebase. 🚀

[A1exKH]

LGTM.

In scope of this PR:

1. Was added new file VAST 4.0 Samples/redirect-test.xml
2. Old links, that returned 403 AccessDenied message, were replaced for valid links on github.
   2.1. Old:
   <![CDATA[https://iab-publicfiles.s3.amazonaws.com/vast/VAST-4.0-Short-Intro.mp4]]>
   New:
   <![CDATA[https://github.com/inetra/VAST_Samples/raw/master/VAST/VAST-4.0-Short-Intro.mp4]]>
   2.2. Old:
   <![CDATA[https://iab-publicfiles.s3.amazonaws.com/vast/VAST-4.0-Short-Intro-mid-resolution.mp4]]>
   New:
   <![CDATA[https://github.com/inetra/VAST_Samples/raw/master/VAST/VAST-4.0-Short-Intro-mid-resolution.mp4]]>
   2.3. Old:
   <![CDATA[https://iab-publicfiles.s3.amazonaws.com/vast/VAST-4.0-Short-Intro-low-resolution.mp4]]>
   New:
   <![CDATA[https://github.com/inetra/VAST_Samples/raw/master/VAST/VAST-4.0-Short-Intro-low-resolution.mp4]]>