MODIFY intance/create and intance/update files to add version flag as…

[gtemitheo]

… an alias for integration, and to add version and latestVersion flags respectively

• create_instance
  • Exposed a new flag called version
  • Change the integration flag to non required
  • Created a condition that checks if either field was supplied
    • If not supplied an error is thrown
  • Added a new variable that used the first non-None value
  • Set the variable as the default for the integration variable
• update_instance
  • Added new flag for version and for latestVersion, both non-required
  • Added a variable for version and implemented the call in graphql
  • ?? How can I get the latest version in order to supply if the flag is provided?

[sc-11999]

[hipplej]

Really minor feedback. I think the only blocking issue is that you'll need to bump the version in package.json to 4.6.3. Then we can get it published!

[hipplej]

Super minor nit but otherwise LGTM.