fix: Accommodating keystore parameters with spaces

[1000TurquoisePogs]

Recreation of #1664 for using branch without fork.

Description

Recently we've seen users that have spaces in their keystore such that $KEY_ALIAS could be misinterpreted.
A solution is to put quotes around the parameters, and that's what was done successfully in the web explorers such as here https://github.com/zowe/explorer-jes/blob/master/bin/start.sh#L47-L52
I tried to find all occurrences of variables that might need spaces, though perhaps having quotes everywhere is not a bad idea.

Type of change

Please delete options that are not relevant.

• (fix) Bug fix (non-breaking change which fixes an issue)

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules

I'll run the automated tests on this to see how it does.

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
0.0% Duplication

[1000TurquoisePogs]

Looks like my changes passed every test except one just because it doesnt work with my username, probably.

[balhar-jakub]

Thanks for spotting and fixing.