SAM deploy: do not require CodeUri if InlineCode is present

**Describe the bug**

With a resource of type `AWS::Serverless::Function`, when using the `InlineCode` property and not setting `CodeUri`, upon deploying, the following error occurs:

```
Missing or invalid value in Template for key: CodeUri
An error occurred while deploying a SAM Application. Check the logs for more information by running the "View AWS Toolkit Logs" command from the Command Palette.
```

**To Reproduce**

1. In `template.yml`, create a resource like:

```yml
rStringSplitterFunction:
Type: AWS::Serverless::Function
Properties:
InlineCode: |
import json
import cfnresponse
def lambda_handler(event, context):
responseData = {"Data": "hello world"}
cfnresponse.send(event, context, cfnresponse.SUCCESS, responseData)
Handler: index.lambda_handler
Runtime: python3.6
```

2. From the Toolkit select `Deploy SAM Application`

**Expected behavior**

Expected the application to deploy, like when I use `sam build && sam deploy --guided` from the terminal.

**Desktop (please complete the following information):**

- OS: Darwin x64 18.7.0
- Visual Studio Code Version: 1.45.1
- AWS Toolkit Version: 1.9.0

Start with the template.yml example and reproduce the failure using Deploy SAM Application in the AWS Toolkit, then compare it with sam build && sam deploy --guided. Trace the deployment path that reports “Missing or invalid value in Template for key: CodeUri.” Done means an AWS::Serverless::Function using InlineCode without CodeUri deploys successfully.

Written by the indexing model from the issue text.