Fix Changes to VSAM Dataset Name Causing Volume Value to Reset

Previously changes to vsam dataset names causing the VSAM volume name to reset to previous values
Fix installationArgs showing up in editor occassionally
Fix yaml reverting to old values after pasting into editor. This change should also improve performance as it removes a second unnecessary schema validation step
Fix resume button not showing sometimes when a previous installation does exist. Previous date not saving occasionally (not fixed), causing button to not appear every time.

Proposed changes

This PR addresses Issue: [Link to Github issue within https://github.com/zowe/zen/issues if any]

This PR depends upon the following PRs:

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[ ] Bug fix (non-breaking change which fixes an issue)
[ ] New feature (non-breaking change which adds functionality)
[ ] Change in a documentation
[ ] Refactor the code
[ ] Chore, repository cleanup, updates the dependencies.
[ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)

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[ ] If the changes in this PR are meant for the next release / mainline, this PR targets a "staging" branch.
[ ] My code follows the style guidelines of this project (see: Contributing guideline)
[ ] I have commented my code, particularly in hard-to-understand areas
[ ] I have made corresponding changes to the documentation
[ ] New and existing unit tests pass locally with my changes
[ ] video or image is included if visual changes are made
[ ] My changes generate no new warnings
[ ] I have added tests that prove my fix is effective or that my feature works, or describe a test method below