Address leftover comments

This is a follow-up commit from aosp/2076483. Mainly to update:
1. Update the hex string to human understandable code instead of
   byte code.
2. Use IgnoreUpTo() to do the SDK check
3. Avoid relying on the code being tested

Bug: 192078259
Test: atest FrameworksNetTests
Change-Id: I8973d248a1d30fdcb597677dbf051e146041f905
(cherry picked from commit a023f88193c62b78afc0508865c8961863c9efda)
Merged-In: I8973d248a1d30fdcb597677dbf051e146041f905
1 file changed