Add call_kwargs(args, kwargs) method to torch::deploy api

[wconstab]

Summary: To be used by PyTorchPredictor integration for deploy.

Test Plan: tested via new unit tests

Differential Revision: D28154522

[facebook-github-bot]

💊 CI failures summary and remediations

As of commit cbe2454 (more details on the Dr. CI page):

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• 2/2 failures introduced in this PR

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🕵️ 1 new failure recognized by patterns

The following CI failures do not appear to be due to upstream breakages:

pytorch_macos_10_13_py3_build (1/1)

Step: "Spin up environment" (full log | diagnosis details | 🔁 rerun)

Waiting for a VM assignment: .......................................................................

Build-agent version 1.0.59410-ac2f4da3 (2021-05-04T13:51:31+0000)
Creating a dedicated VM with xcode:12.0 image
Waiting for a VM assignment: ............................................................................................................................................................................................................................................................................................................

We timed out preparing a VM for this build, potentially due to our infrastructure or cloud provider.  Please retry the build in a few minutes

Unexpected capacity error: error caused by capacity

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1 failure not recognized by patterns:

Job	Step	Action
render_test_results	Output Test Results (Click Me)	🔁 rerun

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[facebook-github-bot]

This pull request was exported from Phabricator. Differential Revision: D28154522

[facebook-github-bot]

This pull request was exported from Phabricator. Differential Revision: D28154522

[facebook-github-bot]

This pull request was exported from Phabricator. Differential Revision: D28154522

[facebook-github-bot]

This pull request was exported from Phabricator. Differential Revision: D28154522

[facebook-github-bot]

This pull request has been merged in ba500c5.

[mruberry]

Bad news, @wconstab, this appears to be breaking three HUD builds, sample snippet:

/var/lib/jenkins/workspace/torch/csrc/deploy/interpreter/interpreter_impl.cpp: In member function 'virtual torch::deploy::Obj ConcreteInterpreterSessionImpl::call_kwargs(torch::deploy::Obj, std::vector<c10::IValue>, std::unordered_map<std::__cxx11::basic_string<char>, c10::IValue>)':
/var/lib/jenkins/workspace/torch/csrc/deploy/interpreter/interpreter_impl.cpp:440:15: error: decomposition declaration only available with -std=c++1z or -std=gnu++1z [-Werror]
     for (auto [key, value] : kwargs) {

[facebook-github-bot]

This pull request has been reverted by 40cb55f.