fix(DataList): Add dropdown and button actions to DataList

[boaz0]

This is a follow-up to #927
Now you can add Dropdown or Button to DataListAction.
Please feel free to review the API, I did it as simple as I could but if you believe it needs another abstraction or logical layer, I would like to hear.

cc @jgiardino @jschuler @christiemolloy

[patternfly-build]

PatternFly-React preview: https://1079-pr-patternfly-react-patternfly.surge.sh

[coveralls]

Pull Request Test Coverage Report for Build 3879

• 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 81.203%

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Totals
Change from base Build 3866:	0.0%
Covered Lines:	4367
Relevant Lines:	5074

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💛 - Coveralls

[tlabaj]

@boaz0 Please resolve conflicts.

[boaz0]

@tlabaj rebased.

[mcarrano]

Looks fine to me, although I don't see an example with a dropdown. Are we talking about having a kabob?

[mcoker]

Looks good to me, but should the dropdown at the end of a row default to use the align-right example as seen on https://pf-next.com/components/dropdown/examples/?

[karelhala]

I don't think that passing button with kebab icon without any children is behavior described by core pattern.

[christiemolloy]

• In some of the examples, the kebabs aren't clickable, and are a different color from Core.
• In the example where there is a Delete button, what is the purpose of "Delete" should it actually remove the line? Right now, it isn't functioning.

[tlabaj]

@boaz0 what is the status of this PR? Looks like there are some outstanding comments from @christiemolloy that should be address?

[codecov-io]

Codecov Report

Merging #1079 into master will decrease coverage by 0.01%.
The diff coverage is 66.66%.

@@            Coverage Diff             @@
##           master    #1079      +/-   ##
==========================================
- Coverage   83.86%   83.85%   -0.02%     
==========================================
  Files         556      557       +1     
  Lines        5857     5865       +8     
  Branches       12       12              
==========================================
+ Hits         4912     4918       +6     
- Misses        943      945       +2     
  Partials        2        2

Flag	Coverage Δ
#patternfly3	84.89% <ø> (ø)	⬆️
#patternfly4	81.48% <66.66%> (-0.03%)	⬇️
#patternflymisc	95.65% <ø> (ø)	⬆️

Impacted Files	Coverage Δ
...act-core/src/components/DataList/DataListAction.js	75% <66.66%> (ø)

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[karelhala]

I like this implementation! Simple and straight forward.

[christiemolloy]

Thanks for applying the comments I made! Looks awesome

[tlabaj]

LGTM

[boaz0]

Thank you all for the patience and feedback. Appreciate it a lot.
🙇‍♂️ 🙏