P11_Dev: FRU VPD collection never gets triggered in a specific scenario

[souvik1914581]

In current P11_Dev vpd-manager initialization flow, if System VPD collection timer (2 seconds) expires, and System VPD is not on D-Bus for some reason, FRU VPD collection is never triggered.
This can cause undefined behavior down the flow, for eg. vpd-manager publishes APIs without collecting and publishing VPD of any FRU.

This is a rare, but undefined scenario which needs to be addressed.

[souvik1914581]

Discussed this with @SunnySrivastava1984 and we plan to implement a re-try mechanism to handle this scenario.