Support 'more than' and 'less than' statements in verify and try to verify is

[peterparser]

This PR adds the support for more than and less than keywords in verify and try to verify is statements.

When I was implementing some test cases, I found that this two statements could be useful instead of parsing the data from the kubectl output and do the comparison in a bash fashion.

In case some other changes are needed, please, let me know.

[vincent-zurczak]

Hi @peterparser!

This is a great contribution.
Thank you!

I added few comments, mostly cosmetic.

[peterparser]

Hi @peterparser!

This is a great contribution. Thank you!

I added few comments, mostly cosmetic.

Thanks @vincent-zurczak! I've made the changes, also I changed the tests from testing if more is present I now check for more than, the same happens with less. Thanks again

[brokenpip3]

🚀

[vincent-zurczak]

@peterparser Again, thank you for this contribution.
I merged it and I was about to create a new tag when I noticed the README documentation had not been updated. Do you think you could do that please?

[peterparser]

@peterparser Again, thank you for this contribution. I merged it and I was about to create a new tag when I noticed the README documentation had not been updated. Do you think you could do that please?

Sure, I will update it and put some examples in the examples folder!