Add new field to save customized message for validation

[akhilkr128]

issue

Need a new field for saving the customized message.

[kbrock]

@akhilkr128 does the request to rename the field make sense to you?

[miq-bot]

Checked commit akhilkr128@78498fd with ruby 2.6.9, rubocop 1.19.1, haml-lint 0.35.0, and yamllint
1 file checked, 0 offenses detected
Everything looks fine. 🍪

[akhilkr128]

@akhilkr128 does the request to rename the field make sense to you?

Completely understood what @jrafanie said. Previously in the UI there was a term failed I removed it later because the form won't be submitted and technically it won't fail. This message will notify the user instantly to help the user input data. I think the field name change is not needed. The current UI will look like this.

But if you guys think this field name change will increase code readability please let me know, I will make the changes.