add symbol to pylint message

[diefans]

I often have projects, which require to silence pylint messages explicitelly by their symbol.
If we could add this patch, the symbol would appear in the message and it would be quite easy to achieve.

[coveralls]

Pull Request Test Coverage Report for Build 153

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 40.49%

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Totals
Change from base Build 52:	0.0%
Covered Lines:	347
Relevant Lines:	857

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💛 - Coveralls