Fixed the examples argument parser problem of not handling booleans

[andrewcheelightstep]

Modified the argument parser for the --use_tls argument because it wasn't parsing booleans correctly.

[carlosalberto]

Hey @andrewcheelightstep

Thanks for the PR (and sorry for the delayed review). The change looks right, and the only thing I wonder is the default value - before this change, the expected default value was to use TLS, while with this change the default would be to not use it.

Maybe we should rename it to no_tls, so by default we stil use TLS? Else, we can merge, I'd say.

@katiabazzi @frenchfrywpepper

[joeblubaugh]

Agree with @carlos - it's just an example program, but --disable_tls seems like a better name for this behavior. Then we can set store_false and default to TLS

[andrewcheelightstep]

I have no problems with this. Is this something we can merge soon?