Fix for #82

[elv1s42]

TeamCity doesn't support artifacts with paths containing comma character: https://youtrack.jetbrains.com/issue/TW-19333
In order to make sure the artifacts are published correctly, we are replacing the comma character with '_'.
This PR is fix for #82

[SeanKilleen]

Just out of curiosity - is there a reason we wouldn't want to add , to the _invalidFileChars at the initialization, since what we're trying to say is that the , is invalid for this purpose?

It seems like that would express the purpose clearly while saving the or statement.

[SeanKilleen]

(Also, thank you for this PR!)

[elv1s42]

Just out of curiosity - is there a reason we wouldn't want to add , to the _invalidFileChars at the initialization, since what we're trying to say is that the , is invalid for this purpose?

I agree! Changed the code a little bit. The _invalidFileChars is used only in one place, so it should not affect any other logic of the ServiceMessageFactory.

[elv1s42]

Right now, I am testing if the fix is actually working. I can confirm it after some builds will finish in the TeamCity.
Are there any other actions required from my side to get this PR merged?

[elv1s42]

Ok, I can confirm that the fix is working, but now I'm facing another issue: #84

[elv1s42]

Closing this PR because it doesn't fix #84