refactor: Updated how classNames package is referenced

[chalettu]

Made it consistent across the project how classNames package is imported and used by all components

Fix #230

[coveralls]

Pull Request Test Coverage Report for Build 966

• 70 of 71 (98.59%) changed or added relevant lines in 68 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 71.391%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/components/UtilizationBar/helpers.js	1	2	50.0%

Totals
Change from base Build 964:	0.0%
Covered Lines:	1244
Relevant Lines:	1574

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💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 992

• 70 of 71 (98.59%) changed or added relevant lines in 68 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 71.577%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/components/UtilizationBar/helpers.js	1	2	50.0%

Totals
Change from base Build 988:	0.0%
Covered Lines:	1255
Relevant Lines:	1585

---

💛 - Coveralls

[priley86]

greetings @chalettu and welcome to the pf-react community ✌️

this is very much appreciated! I think standards like this make the code much more readable and easier to follow for all of us (beginners especially).

the changes here look great! two more small more requests for this PR to close the issue:

• can you add some brief note about classNames to the coding conventions section in CONTRIBUTING.md?
• can you possibly rebase your commit just a tad... refactor(classNames): Updated how classNames package is referenced ... we use conventional-changelog convention... if you are ever stuck on this, npm run commit can help...

[chalettu]

@priley86 , I made the updates you requested. Can you take a look at this PR again? Thank you

[jeff-phillips-18]

Thanks @chalettu!