Aws userTags does not support all AWS valid characters in install-config file.

Issue

• Facing issue while setting userTags in the install-config file for AWS as per specified in the official doc Optional AWS configuration parameters

platform:
  aws:
    region: us-east-1
    propagateUserTags: true
    userTags:
      key1: "Test Space"     <---------------
      key2: value2

• The installer is unable to recognize the special characters for userTags values under install-config.yaml and as a result, the installation encounters the following error :

ERROR failed to fetch Metadata: failed to load asset "Install Config": failed to create install config: invalid "install-config.yaml" file: platform.aws.userTags[key1]: Invalid value: "Test Space": value contains invalid characters