Added K8S 1.8-11.x and the missing -strict

[consideRatio]

@garethr thank you for the work you have done with this and kubeval! It made me catch a sneaky bug that took a long time to find. I hope to use kubeval with an even more satisfactory feeling using these updates.

This PR

1. Added fresh versions
   • v1.11.0
   • v1.10.5
   • v1.9.9
   • v1.8.14
2. Complemented versions lacking -strict directories
3. Updated master fully
4. I added tooling to avoid running old stuff once again pointlessly (recreate=false in build.sh)

[consideRatio]

@hiddeco thanks for paving the way, your PR functioned as documentation on how to contribute for me =D

[willthames]

There is an extra -o here that is incorrect.

[consideRatio]

Oh woops - I tested what would happen with this this mistake of including -o and realized that this means that whatever I ran with recreate=false with a non-existing ...-local directory were never created.

I'll make sure to fix this, and generate potentially missing ...-local directories.

---

# the empirical test I made to determine what adding -o caused
mkdir test
if [ ! -d -o "test" ]; then echo "1"; fi
if [ ! -d "test" ]; then echo "2"; fi
if [ ! -d -o "testNoExistance" ]; then echo "3"; fi
if [ ! -d "testNoExistance" ]; then echo "4"; fi
# output was "4" only

[consideRatio]

Thanks @willthames for reviewing the changes I made to the generation script.

I had generated all the ...-local folders were before I introduced these conditionals with this bug causing non-existing -local folders to not be generated - in other words: no harm was done.

[willthames]

@consideRatio - yeah, I noticed because I wanted to generate -local-strict and copied the -local step and then wondered why nothing happened :)

[garethr]

Apologies for taking an age to get back to this, I've not had much time to maintain in a while unfortunately. I've done a bulk update of versions today, and have some plans afoot to move this into a standalone org and get more folks involved as maintainers. I'll ping when I have more details in case you might still be interested.