summarize_graph show framework error when input saved_model is selected

[vgavrilo]

Root cause analysis: For some TF saved_model, we have a framework error after running the script summarize_graph.py.

mo.utils.error.FrameworkError: SavedModel format load failure: MetaGraphDef associated with tags '' could not be found in SavedModel. To inspect available tag-sets in the SavedModel, please use the SavedModel CLI: saved_model_cli
available_tags: [{'serve'}].

The reason of this error is the following: the value of the command line key --saved_model_tags must be considered as a group of tag(s) of the MetaGraphDef to load, in string format, separated by commas. Hence, this value must be split into a list of strings by commas. But such splitting isn't performed.

Solution: add splitting the value of the command line key --saved_model_tags by commas.

Tickets:

• 58810

Code:

• Comments
• Code style (PEP8)
• Transformation generates reshape-able IR: N/A because there are no new transformations
• Transformation preserves original framework node names: N/A because there are no new transformations

Validation:

• Unit tests: N/A
• Framework operation tests: N/A - No new enabled operations;
• Transformation tests: N/A - No new implemented transformations;
• Model Optimizer IR Reader check: N/A

Documentation:

• Supported frameworks operations list: N/A - No new supported operations;
• Supported public models list: N/A - Nothing to add;
• User guide update: N/A - Nothing to update.

[vgavrilo]

@iimironov, @rkazants, @popovaan, @lazarevevgeny, please, see this PR (#6726)

[vgavrilo]

@iimironov, @rkazants, @popovaan, @lazarevevgeny, please, see this PR (#6726)

[vgavrilo]

@iimironov, @rkazants, @popovaan, @lazarevevgeny, please, see this PR (#6726)

[vgavrilo]

@iimironov, @popovaan, @lazarevevgeny, please, see this PR (#6726)