software/ors-amarisoft: Fix json-schemas complain about missing response schemas

As explained in the previous patch now once we have software.cfg and
software.cfg.json, json-schemas started to analyze them instead of skipping
software/ors-amarisoft/ completely, and it started to complain about missing
response schemas, for example:

    ERROR: test_ors-amarisoft_software_cfg_json (slapos.test.test_json_schema.TestJSONSchemaValidation)
    ----------------------------------------------------------------------
    Traceback (most recent call last):
      File "/srv/slapgrid/slappart91/srv/runner/software/45a1e838784afb18daf420009d925c78/eggs/jsonschema-4.17.3-py3.9.egg/jsonschema/validators.py", line 909, in resolve_from_url
        document = self.store[url]
      File "/srv/slapgrid/slappart91/srv/runner/software/45a1e838784afb18daf420009d925c78/eggs/jsonschema-4.17.3-py3.9.egg/jsonschema/_utils.py", line 28, in __getitem__
        return self.store[self.normalize(uri)]
    KeyError: 'file:///srv/slapgrid/slappart91/srv/project/slapos/software/ors-amarisoft/instance-ue-schema.json'

    During handling of the above exception, another exception occurred:

    Traceback (most recent call last):
      File "/srv/slapgrid/slappart91/srv/runner/shared/python3/dd8479ce2a2b9dff51f7185535dd0403/lib/python3.9/urllib/request.py", line 1503, in open_local_file
        stats = os.stat(localfile)
    FileNotFoundError: [Errno 2] No such file or directory: '/srv/slapgrid/slappart91/srv/project/slapos/software/ors-amarisoft/instance-ue-schema.json'

    During handling of the above exception, another exception occurred:

    Traceback (most recent call last):
      File "/srv/slapgrid/slappart91/srv/runner/software/45a1e838784afb18daf420009d925c78/eggs/jsonschema-4.17.3-py3.9.egg/jsonschema/validators.py", line 912, in resolve_from_url
        document = self.resolve_remote(url)
      File "/srv/slapgrid/slappart91/srv/runner/software/45a1e838784afb18daf420009d925c78/eggs/jsonschema-4.17.3-py3.9.egg/jsonschema/validators.py", line 1018, in resolve_remote
        with urlopen(uri) as url:
      File "/srv/slapgrid/slappart91/srv/runner/shared/python3/dd8479ce2a2b9dff51f7185535dd0403/lib/python3.9/urllib/request.py", line 214, in urlopen
        return opener.open(url, data, timeout)
      File "/srv/slapgrid/slappart91/srv/runner/shared/python3/dd8479ce2a2b9dff51f7185535dd0403/lib/python3.9/urllib/request.py", line 517, in open
        response = self._open(req, data)
      File "/srv/slapgrid/slappart91/srv/runner/shared/python3/dd8479ce2a2b9dff51f7185535dd0403/lib/python3.9/urllib/request.py", line 534, in _open
        result = self._call_chain(self.handle_open, protocol, protocol +
      File "/srv/slapgrid/slappart91/srv/runner/shared/python3/dd8479ce2a2b9dff51f7185535dd0403/lib/python3.9/urllib/request.py", line 494, in _call_chain
        result = func(*args)
      File "/srv/slapgrid/slappart91/srv/runner/shared/python3/dd8479ce2a2b9dff51f7185535dd0403/lib/python3.9/urllib/request.py", line 1481, in file_open
        return self.open_local_file(req)
      File "/srv/slapgrid/slappart91/srv/runner/shared/python3/dd8479ce2a2b9dff51f7185535dd0403/lib/python3.9/urllib/request.py", line 1520, in open_local_file
        raise URLError(exp)
    urllib.error.URLError: <urlopen error [Errno 2] No such file or directory: '/srv/slapgrid/slappart91/srv/project/slapos/software/ors-amarisoft/instance-ue-schema.json'>

    During handling of the above exception, another exception occurred:

    Traceback (most recent call last):
      File "/srv/slapgrid/slappart91/srv/project/slapos/slapos/test/test_json_schema.py", line 72, in run
        resolver.resolve(software_type_definition['response'])
      File "/srv/slapgrid/slappart91/srv/runner/software/45a1e838784afb18daf420009d925c78/eggs/jsonschema-4.17.3-py3.9.egg/jsonschema/validators.py", line 898, in resolve
        return url, self._remote_cache(url)
      File "/srv/slapgrid/slappart91/srv/runner/software/45a1e838784afb18daf420009d925c78/eggs/jsonschema-4.17.3-py3.9.egg/jsonschema/validators.py", line 914, in resolve_from_url
        raise exceptions.RefResolutionError(exc)
    jsonschema.exceptions.RefResolutionError: <urlopen error [Errno 2] No such file or directory: '/srv/slapgrid/slappart91/srv/project/slapos/software/ors-amarisoft/instance-ue-schema.json'>

-> Fix this and all other similar errors by adding stub response schemas for all objects that is possible to instantiate.

software/ors-amarisoft/instance-core-network-schema.json

+{
+  "$schema": "http://json-schema.org/draft-04/schema",
+  "description": "Values returned by Core Network instantiation (stub)",
+  "type": "object",
+  "properties": {}
+}

software/ors-amarisoft/instance-enb-schema.json

+{
+  "$schema": "http://json-schema.org/draft-04/schema",
+  "description": "Values returned by eNB instantiation (stub)",
+  "type": "object",
+  "properties": {}
+}

software/ors-amarisoft/instance-gnb-schema.json

+{
+  "$schema": "http://json-schema.org/draft-04/schema",
+  "description": "Values returned by gNB instantiation (stub)",
+  "type": "object",
+  "properties": {}
+}

software/ors-amarisoft/instance-ors-enb-schema.json

+{
+  "$schema": "http://json-schema.org/draft-04/schema",
+  "description": "Values returned by ORS eNB instantiation (stub)",
+  "type": "object",
+  "properties": {}
+}

software/ors-amarisoft/instance-ors-gnb-schema.json

+{
+  "$schema": "http://json-schema.org/draft-04/schema",
+  "description": "Values returned by ORS gNB instantiation (stub)",
+  "type": "object",
+  "properties": {}
+}

software/ors-amarisoft/instance-ue-schema.json

+{
+  "$schema": "http://json-schema.org/draft-04/schema",
+  "description": "Values returned by UEsim instantiation (stub)",
+  "type": "object",
+  "properties": {}
+}

software/ors-amarisoft/ru/schema.json

+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "description": "Values returned by Radio Unit instantiation (stub)",
+  "type": "object",
+  "properties": {}
+}

software/ors-amarisoft/sim/schema.json

+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "description": "Values returned by SIM Card instantiation (stub)",
+  "type": "object",
+  "properties": {}
+}