[Mellanox] wait until hw-management watchdog files ready #211
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Why I did it
watchdog-control service always disarm watchdog during system startup stage. It could be the case that watchdog is not fully initialized while the watchdog-control service is accessing it. This PR adds a wait to make sure watchdog has been fully initialized.
Work item tracking
How I did it
adds a wait to make sure watchdog has been fully initialized.
How to verify it
Manual test
sonic regression
Which release branch to backport (provide reason below if selected)
Tested branch (Please provide the tested image version)
Description for the changelog
Link to config_db schema for YANG module changes
A picture of a cute animal (not mandatory but encouraged)