fix layout issue in vc u3

[zhoumeina]

Signed-off-by: Meina Zhou [email protected]
Fix the layout in create vch in vsphere 6.7 u3. Because the modal dialog has some changes. The original element no longer exist. Need to modify to compatible way.

Fixes #

PR acceptance checklist:

[ ] All unit tests pass
[ ] All e2e tests pass
[ ] Unit test(s) included*
[ ] e2e test(s) included*
[ ] Screenshot attached and UX approved*

*if applicable, add n/a if not

[codecov-io]

Codecov Report

Merging #677 into master will increase coverage by 0.04%.
The diff coverage is 33.33%.

@@            Coverage Diff             @@
##           master     #677      +/-   ##
==========================================
+ Coverage   65.98%   66.02%   +0.04%     
==========================================
  Files          61       61              
  Lines        2919     2917       -2     
  Branches      519      520       +1     
==========================================
  Hits         1926     1926              
+ Misses        691      689       -2     
  Partials      302      302

Impacted Files	Coverage Δ
...p/create-vch-wizard/create-vch-wizard.component.ts	23.52% <33.33%> (+0.22%)	⬆️

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