[BFT] add suspicious flag to a few new log messages

[peterargue]

This is a follow on from https://github.com/onflow/flow-go/pull/3346.

Add the suspicious flag to a few more log events.

[codecov-commenter]

Codecov Report

Merging #3376 (84dc281) into master (54840e4) will increase coverage by 0.18%. The diff coverage is 62.69%.

@@            Coverage Diff             @@
##           master    #3376      +/-   ##
==========================================
+ Coverage   55.28%   55.47%   +0.18%     
==========================================
  Files         744      752       +8     
  Lines       67865    68494     +629     
==========================================
+ Hits        37521    37996     +475     
- Misses      27293    27424     +131     
- Partials     3051     3074      +23     

Flag	Coverage Δ
unittests	55.47% <62.69%> (+0.18%)	:arrow_up:

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
admin/commands/storage/helper.go	78.00% <ø> (ø)
admin/commands/storage/read_results.go	72.60% <0.00%> (ø)
admin/commands/storage/read_seals.go	22.32% <0.00%> (ø)
admin/errors.go	0.00% <0.00%> (ø)
cmd/execution_builder.go	0.00% <0.00%> (ø)
cmd/scaffold.go	18.05% <0.00%> (-0.10%)	:arrow_down:
cmd/verification_builder.go	0.00% <0.00%> (ø)
engine/access/rest/router.go	100.00% <ø> (ø)
fvm/environment/env.go	100.00% <ø> (ø)
fvm/environment/meter.go	81.63% <ø> (-0.73%)	:arrow_down:
... and 74 more

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[peterargue]

bors merge

[bors[bot]]

Build succeeded:

• Integration Tests (make -C integration access-tests)
• Integration Tests (make -C integration bft-tests)
• Integration Tests (make -C integration collection-tests)
• Integration Tests (make -C integration consensus-tests)
• Integration Tests (make -C integration epochs-tests)
• Integration Tests (make -C integration execution-tests)
• Integration Tests (make -C integration ghost-tests)
• Integration Tests (make -C integration mvp-tests)
• Integration Tests (make -C integration network-tests)
• Integration Tests (make -C integration verification-tests)
• Lint (./)
• Lint (./crypto/)
• Lint (./integration/)
• Unit Tests (access)
• Unit Tests (admin)
• Unit Tests (cmd)
• Unit Tests (consensus)
• Unit Tests (engine)
• Unit Tests (fvm)
• Unit Tests (ledger)
• Unit Tests (module)
• Unit Tests (network)
• Unit Tests (others)
• Unit Tests (utils)