Handle FileNotFoundError in read_metadata() to avoid masking software
service upload errors when auditing dc-vault files. This prevents error
propagation during initial uploads where no metadata file exists yet,
while maintaining the expected behavior of returning an empty
dictionary.
Test Plan:
01. PASS - Verify normal software upload flow works with existing
metadata file containing valid JSON.
02. PASS - Attempt software upload with invalid path and verify the
original upload error is reported, not metadata errors.
03. PASS - Delete metadata file and verify audit operations handle
the missing file by returning empty data.
04. PASS - Verify warning logs show proper context for both missing
file and invalid JSON scenarios.
Closes-Bug: 2086728
Change-Id: Ic6fa7071b95e20a3c2e1dbe31d25e3a481d031fc
Signed-off-by: Gustavo Herzmann <gustavo.herzmann@windriver.com>
edd96279bd