Replace Skip() with Except()

[RoniKishner]

Is your feature request related to a problem? Please describe:
Currently there are places in the code tests folder that skips the test when a storageClass/Hardware doesn't exists, however those tests already have a [storage-req] label and similar [req] labels on them, causing the skip to be either unnecessary or might lead to a bug being skipped.

Describe the solution you'd like:

• Remove any Skip() test that is labelled with [req], and replace them with Except() if needed.
• Add [req] label to the tests that are missing those so we could later remove additional Skip() calls.

An example:

if !foundSC {
  Skip("Skip test when Filesystem storage is not present")

Replaced with:
Expect(foundSC)