feat: Linux & Python Runtime Support

[tbarlow12]

What did you implement:

Runtime support for Linux and Python

How did you implement it:

• Added kind to App Service plan and Function app ARM templates
• Added reserved and linuxFxVersion to Function App template
• Moved spawn to Utils class
• Added CoreToolsService to handle any CLI invocation of func
• Using CoreToolsService to package & publish Linux apps
• Only cleaning up built files when not publishing to Linux (see note below)
• Forces Python to run on Linux OS
• Use / instead of OS-specific path separator for function.json file (works for both windows and linux)
• Cleaning up generated python files in package service
• Fixed typo in name uploadZippedArfifactToFunctionApp

Important: Because core tools does not currently support publishing an existing package, any Linux applications will not clean built files. Also, because func azure (used in publishing) invokes the Azure CLI, I have not been able to get it to run properly as a child process. This will currently give the user the exact command to both publish their function app and then clean up the generated files.

How can we verify it:

Specify the linux os in your serverless.yml like:

provider:
    os: linux

and run sls deploy.

Todos:

Note: Run npm run test:ci to run all validation checks on proposed changes

• [x] Ensure there are no lint errors.
  Validate via npm run lint
  Note: Some reported issues can be automatically fixed by running npm run lint:fix
• [x] Write tests and confirm existing functionality is not broken.
  Validate via npm test
• [x] Write documentation
• [x] Provide verification config / commands / resources
• [x] Enable "Allow edits from maintainers" for this PR
• [x] Update the messages below

Is this ready for review?: YES
Is it a breaking change?: NO

[codecov[bot]]

Codecov Report

Merging #362 into dev will increase coverage by 0.04%. The diff coverage is 94.73%.

@@            Coverage Diff             @@
##              dev     #362      +/-   ##
==========================================
+ Coverage   94.44%   94.48%   +0.04%     
==========================================
  Files          48       49       +1     
  Lines        1782     1868      +86     
  Branches      280      301      +21     
==========================================
+ Hits         1683     1765      +82     
- Misses         98      103       +5     
+ Partials        1        0       -1

Impacted Files	Coverage Δ
src/test/mockFactory.ts	90.67% <ø> (-1.04%)	:arrow_down:
src/config.ts	100% <ø> (ø)	:arrow_up:
src/shared/constants.ts	100% <ø> (ø)	:arrow_up:
src/services/coreToolsService.ts	100% <100%> (ø)
src/plugins/package/azurePackagePlugin.ts	100% <100%> (ø)	:arrow_up:
src/plugins/azureBasePlugin.ts	100% <100%> (ø)	:arrow_up:
src/services/rollbackService.ts	100% <100%> (ø)	:arrow_up:
src/armTemplates/resources/appServicePlan.ts	100% <100%> (ø)	:arrow_up:
src/services/configService.ts	98.09% <100%> (+2.09%)	:arrow_up:
src/services/armService.ts	96.8% <100%> (ø)	:arrow_up:
... and 9 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more Δ = absolute <relative> (impact), ø = not affected, ? = missing data Powered by Codecov. Last update 673008b...b99afeb. Read the comment docs.

[Vbubblery]

Hello,

May I ask when could you merge this PR?

And for python' function.js, if it trigger to http, we should change name of out as $return instead of res.

So, it's better to have an arguments to set --python or --nodejs

@tbarlow12

[tbarlow12]

Closing in favor of coming PR