Chart.yaml should be correctly parsed when dependency contain no version or repository

[fstaudt]

When a dependency in Chart.yaml does not contain a version or repository, the YAML parser fails with following exception:

java.security.PrivilegedActionException: java.security.PrivilegedActionException: com.fasterxml.jackson.module.kotlin.MissingKotlinParameterException: Instantiation of [simple type, class io.github.fstaudt.helm.model.ChartDependency] value failed for JSON property repository due to missing (therefore NULL) value for creator parameter repository which is a non-nullable type
 at [Source: (FileInputStream); line: 15, column: 1] (through reference chain: io.github.fstaudt.helm.model.Chart["dependencies"]->java.util.ArrayList[2]->io.github.fstaudt.helm.model.ChartDependency["repository"])

Parsing should succeed and JSON schema generation should take into account the fact that version or repository is missing:

• download should ignore dependencies without version or repository
• extract should extract JSON schemas when dependency has no repository
• extract should ignore dependencies without version
• generateValuesJsonSchema should ignore dependencies without version or repository
• generateValuesJsonSchema should set property for dependency condition for dependencies without version or repository
• aggregate should skip dependencies without version
• aggregate should aggregate extracted JSON schemas for dependency without repository