Replace remaining loops through all objects with iterators

[jphickey]

Is your feature request related to a problem? Please describe.
Previous changes introduced the concept of an iterator in the OSAL shared layer to iterate across all objects of a particular type. However there remains a few cases where code is still doing a "for" loop through each index.

Describe the solution you'd like
For consistency of operation, these should be converted to iterators.

Additional context
Importantly the iterator handles locking of the global table. Using the iterator ensures that this is done consistently, and provides the appropriate token object for any calls to other functions.

Requester Info
Joseph Hickey, Vantage Systems, Inc.