Fix namespace errors in PyTorch CI (#532)

Summary:
Pull Request resolved: #532

PyTorch CI has some issues with the two namespaces such as Config defined in KINETO_NAMESPACE. Add using namespace to the failed areas.

Test Plan:
Fixes the errors on CI tests vulkan-bionic-py3.7-clang9, xenial-cuda11.3-py3.7-gcc7, xenial-py3.7-clang7-asan,xenial-py3.7-clang7-onnx, xenial-py3.7-gcc5.4, xenial-py3.7-gcc7, xenial-py3.6-gcc7-no-ops:
```
2022-02-15T17:42:01.5120839Z In file included from /var/lib/jenkins/workspace/torch/csrc/autograd/profiler_kineto.cpp:23:
2022-02-15T17:42:01.5122878Z In file included from /var/lib/jenkins/workspace/third_party/kineto/libkineto/include/libkineto.h:18:
2022-02-15T17:42:01.5123681Z In file included from /var/lib/jenkins/workspace/third_party/kineto/libkineto/include/ActivityProfilerInterface.h:12:
2022-02-15T17:42:01.5125190Z /var/lib/jenkins/workspace/third_party/kineto/libkineto/include/IActivityProfiler.h:92:13: error: unknown type name 'Config'; did you mean 'KINETO_NAMESPACE::Config'?
2022-02-15T17:42:01.5127932Z       const Config& config) = 0;
2022-02-15T17:42:01.5128356Z             ^~~~~~
2022-02-15T17:42:01.5128871Z             KINETO_NAMESPACE::Config
2022-02-15T17:42:01.5129844Z /var/lib/jenkins/workspace/third_party/kineto/libkineto/include/Config.h:19:7: note: 'KINETO_NAMESPACE::Config' declared here
2022-02-15T17:42:01.5130467Z class Config : public AbstractConfig {
2022-02-15T17:42:01.5132737Z       ^
2022-02-15T17:42:01.5133430Z In file included from /var/lib/jenkins/workspace/torch/csrc/autograd/profiler_kineto.cpp:23:
2022-02-15T17:42:01.5134143Z In file included from /var/lib/jenkins/workspace/third_party/kineto/libkineto/include/libkineto.h:18:
2022-02-15T17:42:01.5134920Z In file included from /var/lib/jenkins/workspace/third_party/kineto/libkineto/include/ActivityProfilerInterface.h:12:
2022-02-15T17:42:01.5136267Z /var/lib/jenkins/workspace/third_party/kineto/libkineto/include/IActivityProfiler.h:99:13: error: unknown type name 'Config'; did you mean 'KINETO_NAMESPACE::Config'?
2022-02-15T17:42:01.5162842Z       const Config& config) = 0;
2022-02-15T17:42:01.5163525Z             ^~~~~~
2022-02-15T17:42:01.5165565Z             KINETO_NAMESPACE::Config
2022-02-15T17:42:01.5166108Z /var/lib/jenkins/workspace/third_party/kineto/libkineto/include/Config.h:19:7: note: 'KINETO_NAMESPACE::Config' declared here
2022-02-15T17:42:01.5166657Z class Config : public AbstractConfig {
2022-02-15T17:42:01.5166901Z       ^
2022-02-15T17:42:01.5167612Z
```

Reviewed By: briancoutinho

Differential Revision: D34249427

Pulled By: aaronenyeshi

fbshipit-source-id: 77bc184715579cc16d615c652ffebf54232e972b

libkineto/include/IActivityProfiler.h

@@ -17,6 +17,8 @@
 
 namespace libkineto {
 
+using namespace KINETO_NAMESPACE;
+
 #ifdef _MSC_VER
 // workaround for the predefined ERROR macro on Windows
 #undef ERROR

libkineto/include/ILoggerObserver.h

@@ -14,7 +14,7 @@ constexpr char kPostProcessingStage[] = "Post Processing";
 #include <map>
 #include <vector>
 
-namespace KINETO_NAMESPACE {
+namespace libkineto {
 
 enum LoggerOutputType {
   VERBOSE = 0,
@@ -45,6 +45,6 @@ class ILoggerObserver {
 
 };
 
-} // namespace KINETO_NAMESPACE
+} // namespace libkineto
 
 #endif // !USE_GOOGLE_LOG

libkineto/src/ILoggerObserver.cpp

@@ -9,7 +9,7 @@
 #include <array>
 #include <fmt/format.h>
 
-namespace KINETO_NAMESPACE {
+namespace libkineto {
 
 struct LoggerTypeName {
   constexpr LoggerTypeName(const char* n, LoggerOutputType t) : name(n), type(t) {};
@@ -48,7 +48,7 @@ LoggerOutputType toLoggerOutputType(const std::string& str) {
   throw std::invalid_argument(fmt::format("Invalid activity type: {}", str));
 }
 
-} // namespace KINETO_NAMESPACE
+} // namespace libkineto
 
 
 #endif // !USE_GOOGLE_LOG

libkineto/src/LoggerCollector.h

@@ -15,6 +15,8 @@
 
 namespace KINETO_NAMESPACE {
 
+using namespace libkineto;
+
 class LoggerCollector : public ILoggerObserver {
  public:
   LoggerCollector() : buckets_() {}