OAS2: invalid spec created for mandatory formData parameters

[antaln]

Describe the bug

Building an OAS2 spec against vSphere vCenter 8.0u3 results in vcenter.json that does not pass OAS2 validation.

For example, Swagger-cli reports:

Swagger schema validation failed.
  #/basePath must match pattern "^/"
  #/paths/~1api~1vcenter~1authentication~1token/post/parameters/0 must have required property 'schema'
  #/paths/~1api~1vcenter~1authentication~1token/post/parameters/0 must NOT have additional properties
  #/paths/~1api~1vcenter~1authentication~1token/post/parameters/0/in must be equal to one of the allowed values
  #/paths/~1api~1vcenter~1authentication~1token/post/parameters/0/required must be boolean
  #/paths/~1api~1vcenter~1authentication~1token/post/parameters/0/required must be boolean
  #/paths/~1api~1vcenter~1authentication~1token/post/parameters/0/in must be equal to one of the allowed values
  #/paths/~1api~1vcenter~1authentication~1token/post/parameters/0/required must be boolean
  #/paths/~1api~1vcenter~1authentication~1token/post/parameters/0/required must be boolean
  #/paths/~1api~1vcenter~1authentication~1token/post/parameters/0/in must be equal to one of the allowed values
  #/paths/~1api~1vcenter~1authentication~1token/post/parameters/0/required must be boolean
  #/paths/~1api~1vcenter~1authentication~1token/post/parameters/0/required must be equal to one of the allowed values
  #/paths/~1api~1vcenter~1authentication~1token/post/parameters/0/in must be equal to one of the allowed values
  #/paths/~1api~1vcenter~1authentication~1token/post/parameters/0 must match exactly one schema in oneOf
  #/paths/~1api~1vcenter~1authentication~1token/post/parameters/0 must match exactly one schema in oneOf
  #/paths/~1api~1vcenter~1authentication~1token/post/parameters/0 must have required property '$ref'
  #/paths/~1api~1vcenter~1authentication~1token/post/parameters/0 must NOT have additional properties
  #/paths/~1api~1vcenter~1authentication~1token/post/parameters/0 must NOT have additional properties
  #/paths/~1api~1vcenter~1authentication~1token/post/parameters/0 must NOT have additional properties
  #/paths/~1api~1vcenter~1authentication~1token/post/parameters/0 must NOT have additional properties
  #/paths/~1api~1vcenter~1authentication~1token/post/parameters/0 must NOT have additional properties
  #/paths/~1api~1vcenter~1authentication~1token/post/parameters/0 must match exactly one schema in oneOf

Analysis shows that formData mandatory parameter of POST /api/vcenter/authentication/token has field "required":"true" instead of "required":true.

The root cause appears to be:
https://github.com/vmware/vmware-openapi-generator/blob/54cf631512e69ca731a1fd5c0662b647833e7e2d/lib/api_endpoint/swagger2/api_swagger_parameter_handler.py#L125

Similar mistype is observed also here:
https://github.com/vmware/vmware-openapi-generator/blob/54cf631512e69ca731a1fd5c0662b647833e7e2d/lib/api_endpoint/swagger2/api_swagger_parameter_handler.py#L95

(Edited: updated to correct parameter type and suspected code line)

Reproduction steps

1. python vmsgen.py -vc <vcenter-8.0u3-host -oas 2 -o generated
2. swagger-cli validate generated/vcenter.json

Expected behavior

Required mandatory parameters should result in a valid OAS2 spec.

Additional context

No response