Enable Client Auth unit test on Linux (#1312)

scripts/build/Platform/Linux/build_config.json

@@ -83,7 +83,7 @@
       "CMAKE_OPTIONS": "-G 'Ninja Multi-Config' -DCMAKE_C_COMPILER=clang-6.0 -DCMAKE_CXX_COMPILER=clang++-6.0 -DLY_UNITY_BUILD=TRUE -DLY_PARALLEL_LINK_JOBS=4",
       "CMAKE_LY_PROJECTS": "AutomatedTesting",
       "CMAKE_TARGET": "all",
-      "CTEST_OPTIONS": "-E (Gem::EMotionFX.Editor.Tests|Gem::AWSClientAuth.Tests|Gem::AWSCore.Editor.Tests) -LE SUITE_sandbox -L FRAMEWORK_googletest"
+      "CTEST_OPTIONS": "-E (Gem::EMotionFX.Editor.Tests|Gem::AWSCore.Editor.Tests) -LE SUITE_sandbox -L FRAMEWORK_googletest"
     }
   },
   "test_profile_nounity": {
@@ -95,7 +95,7 @@
       "CMAKE_OPTIONS": "-G 'Ninja Multi-Config' -DCMAKE_C_COMPILER=clang-6.0 -DCMAKE_CXX_COMPILER=clang++-6.0 -DLY_UNITY_BUILD=FALSE -DLY_PARALLEL_LINK_JOBS=4",
       "CMAKE_LY_PROJECTS": "AutomatedTesting",
       "CMAKE_TARGET": "all",
-      "CTEST_OPTIONS": "-E (Gem::EMotionFX.Editor.Tests|Gem::AWSClientAuth.Tests|Gem::AWSCore.Editor.Tests) -LE SUITE_sandbox -L FRAMEWORK_googletest"
+      "CTEST_OPTIONS": "-E (Gem::EMotionFX.Editor.Tests|Gem::AWSCore.Editor.Tests) -LE SUITE_sandbox -L FRAMEWORK_googletest"
     }
   },
   "asset_profile": {