IVGCVSW-6420: Constant flag in tensor info is not set correctly

!android-nn-driver:6532
!armnn-internal-tests:372451

  * Made fix to 2 out of 3 ConstTensor() constructors in Tensor.hpp to
    throw InvalidArgumentException when TensorInfo isConstant parameter
    is false.
  * Added new ConstTensor() constructor in Tensor.cpp to accept vector<>.data()
    using template<typename MemoryType>.
  * Fixed runtime->GetOutputTensorInfo()/GetInputTensorInfo() methods and
    called submethods to return TensorInfo& rather than TensorInfo.
  * Fixed all failing unit tests for CpuRef/CpuAcc/GpuAcc to ensure any
    ConstTensor created has it's TensorInfo isConstant set to true.
  * Added unit tests in TensorTest.cpp to ensure ConstTensor constructors
    throw InvalidArgumentException when TensorInfo isConstat parameter is
    false.
  * Added unit test to ensure an empty ConstTensor constructor will set
    TensorInfo isConatant to true.
  * Indentation fixes.
  * Fix to arm_tensor.i to add isConstant parameter to TensorInfo
    constructor. Added methods IsConstant() and SetConstant().
  * Fix to const_tensor.py to throw ValueError when TensorInfo
    isConstant is set to false when constructing a ConstTensor.
  * Fixed PyArmnn unit tests to set TensorInfo isConstant to
    True when ConstTensor is used.
  * Added unit tests in test_const_tensor.py to ensure ConstTensor
    constructors throw ValueError when TensorInfo isConstat parameter
    is false.

Signed-off-by: Cathal Corbett <cathal.corbett@arm.com>
Change-Id: I44e440dd0422c366d31bbdbc77ad2b4db0bde148
diff --git a/src/backends/cl/test/ClFallbackTests.cpp b/src/backends/cl/test/ClFallbackTests.cpp
index 7721206..7cd05d1 100644
--- a/src/backends/cl/test/ClFallbackTests.cpp
+++ b/src/backends/cl/test/ClFallbackTests.cpp
@@ -35,6 +35,7 @@
     sub->GetOutputSlot(0).Connect(output->GetInputSlot(0));
 
     TensorInfo info = TensorInfo({ 1, 2, 4, 2 }, DataType::Float32);
+    info.SetConstant(true);
 
     input0->GetOutputSlot(0).SetTensorInfo(info);
     input1->GetOutputSlot(0).SetTensorInfo(info);
@@ -181,6 +182,7 @@
     sub->GetOutputSlot(0).Connect(output->GetInputSlot(0));
 
     TensorInfo info = TensorInfo({ 1, 2, 3, 2 }, DataType::Float32);
+    info.SetConstant(true);
 
     input0->GetOutputSlot(0).SetTensorInfo(info);
     input1->GetOutputSlot(0).SetTensorInfo(info);
@@ -311,6 +313,7 @@
     pooling->GetOutputSlot(0).Connect(output->GetInputSlot(0));
 
     TensorInfo info = TensorInfo({ 1, 2, 4, 2 }, DataType::Float32);
+    info.SetConstant(true);
     TensorInfo poolingInfo = TensorInfo({ 1, 2, 2, 1 }, DataType::Float32);
 
     input0->GetOutputSlot(0).SetTensorInfo(info);
@@ -468,6 +471,7 @@
     pooling->GetOutputSlot(0).Connect(output->GetInputSlot(0));
 
     TensorInfo info = TensorInfo({ 1, 2, 3, 2 }, DataType::Float32);
+    info.SetConstant(true);
     TensorInfo poolingInfo = TensorInfo({ 1, 2, 1, 1 }, DataType::Float32);
 
     input0->GetOutputSlot(0).SetTensorInfo(info);
@@ -536,6 +540,7 @@
 
     std::vector<float> expectedOutput{ 11.0f, -1.0f };
 
+
     InputTensors inputTensors
     {
         { 0, armnn::ConstTensor(runtime->GetInputTensorInfo(netId, 0), inputData0.data()) },