Open files command can result in exceedingly large packet

[dmknutsen]

Checklist (Please check before submitting)

• [x ] I reviewed the Contributing Guide.
• [x ] I reviewed the README file to see if the feature is in the major future work.
• [x ] I performed a cursory search to see if the feature request is relevant, not redundant, nor in conflict with other tickets.

Is your feature request related to a problem? Please describe.
FM_GET_OPEN_FILES_CC allows for generation of an exceeding large tlm packet. The packet created is equal to OS_MAX_NUM_OPEN_FILES * (OS_MAX_PATH_LEN + OS_MAX_API_NAME) - which by default equals 50 * (64 + 20) = 4200 bytes.

Describe the solution you'd like
FM could have a configurable open files telemetry packet, such that it allows users to define a max packet size. FM could then iterate through the open files packet data – transmitting a packet once an entry no longer fits within the packet, until all the open files packet data has been sent.

Requester Info
Dan Knutsen
NASA Goddard