Revert to using application variables for configuring Spin components

Signed-off-by: Kate Goldenring <[email protected]>

Remove SpinKube CRD modifications from the scope of the SKIP

Signed-off-by: Kate Goldenring <[email protected]>

Add environment variables alternative and expound on wording

Signed-off-by: Kate Goldenring <[email protected]>

Move SKIP to folder

Signed-off-by: Kate Goldenring <[email protected]>

Author: kate-goldenring