[CI] Restore the exported documentation linter (#12312)

* Restore default linters

.golangci.yml

@@ -4,6 +4,8 @@ run:
     - cmd/agent/app/listchecks.go  # ignore unused command for now
     - pkg/util/cloudproviders/cloudfoundry/bbscache_test.go # implements interface from imported package whose method names fail linting
     - pkg/util/intern/string.go # TODO: fix govet 'unsafeptr' error
+    - pkg/security/rconfig/rconfig.go # TODO: fix revive error (comment on RCPolicyProvider.Close)
+    - pkg/security/probe/selftests/tester.go # TODO: fix revive error (comment on Start)
     - pkg/serverless/trace/inferredspan/constants.go # TODO: fox revive exported const error
 
 issues:
@@ -18,6 +20,9 @@ issues:
     - "`RandomString|TimeNowNano|InitLogging|SetHostname` is unused" # 'deadcode' errors in test/benchmarks/util.go
     - "Error return value of `io.WriteString` is not checked" # 'errcheck' errors in tools/dep_tree_resolver/go_deps.go
     - "Error return value of `pem.Encode` is not checked" # 'errcheck' errors in test/integration/utils/certificates.go
+    - "exported: exported type EasyjsonTime|NewEasyjsonTime|EasyjsonTime.MarshalEasyJSON|EasyjsonTime.UnmarshalJSON should have comment or be unexported" # 'revive' errors in pkg/security/utils/json.go
+    - "exported: exported const Exec should have comment \\(or a comment on this block\\) or be unexported" # 'revive' errors in pkg/process/events/model/model_common.go
+    - "exported: exported const APIName should have comment \\(or a comment on this block\\) or be unexported" # 'revive' errors in pkg/serverless/trace/inferredspan/constants.go
     - "unnecessary conversion" # 'unconvert' errors in test/integration/utils/certificates_test.go
     - "Error return value of .((os\\.)?std(out|err)\\..*|.*Close|.*Flush|os\\.Remove(All)?|.*print(f|ln)?|os\\.(Un)?Setenv). is not checked"
     - "`eventContext` is unused"