Video/fix uplink configuration clarifications

[bsriramprasad]

Clarifications included in Uplink spec

1. Missing Advanced Security service reference included references list
2. If cert validation policy is NOT configured by the client in Uplink configuration, added clarification that server certificate validation depends on device implementation
   • Fall back to use device default device certificate validation policy or to skip validation.
   • Requirement is referred in multiple places and hence updated
     • Uplink

Updated below documents to reflect similar requirement changes related to server certificate

• WebRTConfiguration (Media 2)
• StorageConfiguration (Device)

[bsriramprasad]

Agree with the principle change. However the wording may be misleading as people are looking for ONVIF device specific default policies. Propose something along: If not configured, server certificate validation behavior is undefined and the device may either apply a vendor specific default validation policy or skip validation at all.

Rephrased requirement text as per feedback.