PRIVATE->private and PROTECTED->protected updates in FppTest/component (nasa#3446)

[m-aleem]

Related Issue(s)	#3446
Has Unit Tests (y/n)	Yes - existing
Documentation Included (y/n)	N/A

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Change Description

Updates to fprime/FppTest/component:

• PRIVATE -> private

Rationale

#3446

Testing/Review Recommendations

Testing Conducted: I ran the following inside FppTest: fprime-util generate --ut;fprime-util build --ut;fprime-util check and ensured no failures.

[m-aleem]

UTs passed when I ran locally, but in CI timing test PosixRawTimeTest seems to have failed.

[thomas-bc]

PosixRawTimeTest will fail very occasionally because of the way the tests are designed. Re-running the CI job usually fixes it.

There's likely a way to improve the UT design so that it should deterministically succeed, but it hasn't been enough of an issue that we would prioritize to improve on it.