Abstract Compute node template is not supported

[Miguel Caballer]

In case that try to use a simple abstract compute node like this one:

tosca_definitions_version: tosca_simple_yaml_1_0_0

description: Template with requirements against hosting infrastructure.

topology_template:

  node_templates:

    mysql_compute:
      type: Compute
      capabilities:
        host:
          properties:
            num_cpus: { equal: 2 }
            mem_size: { greater_or_equal: 2 GB }
        os:
          properties:
            architecture: { equal: x86_64 }
            type: linux
            distribution: ubuntu

You get an error, as it is trying to validate the constraints without considering the "operator" functions:

Traceback (most recent call last):
  File "/usr/local/bin/tosca-parser", line 8, in <module>
    sys.exit(main())
  File "/usr/local/lib/python3.10/site-packages/toscaparser/shell.py", line 116, in main
    ParserShell().main(args)
  File "/usr/local/lib/python3.10/site-packages/toscaparser/shell.py", line 59, in main
    self.parse(path)
  File "/usr/local/lib/python3.10/site-packages/toscaparser/shell.py", line 68, in parse
    tosca = ToscaTemplate(path, None, a_file)
  File "/usr/local/lib/python3.10/site-packages/toscaparser/tosca_template.py", line 105, in __init__
    self.topology_template = self._topology_template()
  File "/usr/local/lib/python3.10/site-packages/toscaparser/tosca_template.py", line 120, in _topology_template
    return TopologyTemplate(self._tpl_topology_template(),
  File "/usr/local/lib/python3.10/site-packages/toscaparser/topology_template.py", line 57, in __init__
    self.nodetemplates = self._nodetemplates()
  File "/usr/local/lib/python3.10/site-packages/toscaparser/topology_template.py", line 97, in _nodetemplates
    tpl.validate(self)
  File "/usr/local/lib/python3.10/site-packages/toscaparser/nodetemplate.py", line 188, in validate
    self._validate_capabilities()
  File "/usr/local/lib/python3.10/site-packages/toscaparser/entity_template.py", line 185, in _validate_capabilities
    self._validate_capabilities_properties(capabilities)
  File "/usr/local/lib/python3.10/site-packages/toscaparser/entity_template.py", line 198, in _validate_capabilities_properties
    prop.validate()
  File "/usr/local/lib/python3.10/site-packages/toscaparser/properties.py", line 72, in validate
    self._validate_constraints()
  File "/usr/local/lib/python3.10/site-packages/toscaparser/properties.py", line 77, in _validate_constraints
    constraint.validate(self.value)
  File "/usr/local/lib/python3.10/site-packages/toscaparser/elements/constraints.py", line 186, in validate
    if not self._is_valid(value):
  File "/usr/local/lib/python3.10/site-packages/toscaparser/elements/constraints.py", line 282, in _is_valid
    value >= self.constraint_value):
TypeError: '>=' not supported between instances of 'dict' and 'int'