Include element that caused write error in event reporting in CFE_EVS_WriteAppDataFileCmd

[skliper]

Is your feature request related to a problem? Please describe.
Element that caused error not included in event, so not obvious how much of the write was completed

cFE/modules/evs/fsw/src/cfe_evs_task.c

Lines 1746 to 1748 in 73c338d

	EVS_SendEvent(CFE_EVS_ERR_WRDATFILE_EID, CFE_EVS_EventType_ERROR,
	"Write App Data Command Error: OS_write = 0x%08X, filename = %s",
	(unsigned int)BytesWritten, LocalName);

Describe the solution you'd like
Add the element number

Describe alternatives you've considered
None

Additional context
Code review

Requester Info
Jacob Hageman - NASA/GSFC

[thnkslprpt]

@skliper Were you thinking something like this?

or

[skliper]

@thnkslprpt I don't have strong feelings, but maybe "Write App Data Command Error: At entry %d of %d, OS_write..."?

[thnkslprpt]

@skliper - how would you get the second value (of)?

Isn't the total number of entries that was supposed to be written only known after the for loop ends? Or do you mean to just use CFE_PLATFORM_ES_MAX_APPLICATIONS?

[skliper]

@thnkslprpt - very good point! Stick w/ just EntryCount.