PEL:test: Fix deprecated warnings with new gmock

The new version of gmock was complaining that the use of Invoke() for a
callable was deprecated, so remove it.

```
../subprojects/googletest/googlemock/include/gmock/gmock-actions.h:2059:41: note: declared here
 2059 | typename std::decay<FunctionImpl>::type Invoke(FunctionImpl&& function_impl) {
      |                                         ^~~~~~
../test/openpower-pels/host_notifier_test.cpp:489:31: error: ‘typename std::decay<_Tp>::type testing::Invoke(FunctionImpl&&) [with FunctionImpl = HostNotifierTest_TestCannotStartCmd_Test::TestBody()::<lambda(uint32_t, uint32_t)>&; typename std::decay<_Tp>::type = HostNotifierTest_TestCannotStartCmd_Test::TestBody()::<lambda(uint32_t, uint32_t)>]’ is deprecated: Actions can now be implicitly constructed from callables. No need to create wrapper objects using Invoke(). [-Werror=deprecated-declarations]
  489 |         .WillRepeatedly(Invoke(sendSuccess));
```

Change-Id: Id698baa8eefbe7e2b632bf8e5e750df69e088312
Signed-off-by: Matt Spinler <spinler@us.ibm.com>
diff --git a/test/openpower-pels/host_notifier_test.cpp b/test/openpower-pels/host_notifier_test.cpp
index 8e7380e..33234dc 100644
--- a/test/openpower-pels/host_notifier_test.cpp
+++ b/test/openpower-pels/host_notifier_test.cpp
@@ -57,8 +57,7 @@
         };
 
         // Unless otherwise specified, sendNewLogCmd should always pass.
-        ON_CALL(*mockHostIface, sendNewLogCmd(_, _))
-            .WillByDefault(Invoke(send));
+        ON_CALL(*mockHostIface, sendNewLogCmd(_, _)).WillByDefault(send);
     }
 
     ~HostNotifierTest()
@@ -376,9 +375,9 @@
     };
 
     EXPECT_CALL(*mockHostIface, sendNewLogCmd(_, _))
-        .WillOnce(Invoke(sendFailure))
-        .WillOnce(Invoke(sendSuccess))
-        .WillOnce(Invoke(sendSuccess));
+        .WillOnce(sendFailure)
+        .WillOnce(sendSuccess)
+        .WillOnce(sendSuccess);
 
     dataIface.changeHostState(true);
 
@@ -423,7 +422,7 @@
     };
 
     EXPECT_CALL(*mockHostIface, sendNewLogCmd(_, _))
-        .WillRepeatedly(Invoke(sendFailure));
+        .WillRepeatedly(sendFailure);
 
     dataIface.changeHostState(true);
 
@@ -470,23 +469,23 @@
     // Fails 16 times (1 fail + 15  retries) and
     // then start working.
     EXPECT_CALL(*mockHostIface, sendNewLogCmd(_, _))
-        .WillOnce(Invoke(sendFailure))
-        .WillOnce(Invoke(sendFailure))
-        .WillOnce(Invoke(sendFailure))
-        .WillOnce(Invoke(sendFailure))
-        .WillOnce(Invoke(sendFailure))
-        .WillOnce(Invoke(sendFailure))
-        .WillOnce(Invoke(sendFailure))
-        .WillOnce(Invoke(sendFailure))
-        .WillOnce(Invoke(sendFailure))
-        .WillOnce(Invoke(sendFailure))
-        .WillOnce(Invoke(sendFailure))
-        .WillOnce(Invoke(sendFailure))
-        .WillOnce(Invoke(sendFailure))
-        .WillOnce(Invoke(sendFailure))
-        .WillOnce(Invoke(sendFailure))
-        .WillOnce(Invoke(sendFailure))
-        .WillRepeatedly(Invoke(sendSuccess));
+        .WillOnce(sendFailure)
+        .WillOnce(sendFailure)
+        .WillOnce(sendFailure)
+        .WillOnce(sendFailure)
+        .WillOnce(sendFailure)
+        .WillOnce(sendFailure)
+        .WillOnce(sendFailure)
+        .WillOnce(sendFailure)
+        .WillOnce(sendFailure)
+        .WillOnce(sendFailure)
+        .WillOnce(sendFailure)
+        .WillOnce(sendFailure)
+        .WillOnce(sendFailure)
+        .WillOnce(sendFailure)
+        .WillOnce(sendFailure)
+        .WillOnce(sendFailure)
+        .WillRepeatedly(sendSuccess);
 
     dataIface.changeHostState(true);