Overrides via command line parameters

[ghen]

Overrides via command line parameters

Description
Allows users to override individual properties via command line arguments.

For example:

# Overrides the image for a container
score-humanitec run -f example-score.yaml -p containers.hello.image=hello:1.1

# Removes the property completely
score-humanitec run -f example-score.yaml -p metadata.some-property=

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• New chore (expected functionality to be implemented)

Checklist:

• My change requires a change to the documentation.
  • I have updated the documentation accordingly.
• I've signed off with an email address that matches the commit author.

[chrishumanitec]

Wouldn't it be better to just use a YAML parser here? There are some other ways strings can be created. For example using '. This is handy to allow for shell quotes. You would also get the ability to add objects etc which could also be useful.
We are outputting a YAML file so YAML input makes sense. Also: YAML is a superset of JSON, so JSON objects work as YAML objects too.

Parse float is also probably not sufficient as YAML supports man ways of expressing numbers: https://yaml.org/spec/1.2.2/#24-tags

Also this does not check for invalid strings:

• "hello
  Also would break some valid strings:
• `"this string has a trailing escaped quote ""

[ghen]

Switched to yaml.Decode(..)

[chrishumanitec]

LGTM