…ial characters

…er-policy-not-accept-special-chars

Backport 2.15 THREESCALE-10934 Batcher policy does not accept the same chars specified in Porta regex for app_id, app_key & user_key

With the newer version of lua-resty-http (0.7.1), if a proxy options
is not provided when calling the connect() method, it will fall back to
using the global proxy settings set by the "set_proxy_option" function
(has no effect in previous versions of the library). This then causes
unexpected behavior where the direct connection will now go through
the proxy server.

This PR explicitly sets the proxy options to an empty table to bypass
global proxy settings when connecting directly.

[THREESCALE 11128] Prevent APIcast fallback to global proxy settings for direct connection

CI failed to download dependencies from
http://dkolf.de/src/dkjson-lua.fsl/tarball/dkjson-2.6.tar.gz?uuid=release_2_6.

The endpoint for version 2.6 seems to no longer exist so upgrading busted
to use newer dkjson version

Update busted

…sabled

Details of the issue as well as local reproducers are documented in #1467.

This change ensures that when `boot.init_worker` checks to see whether or not
the configuration needs to be reloaded, it also checks to confirm that the `boot.ttl()`
value set from `APICAST_CONFIGURATION_CACHE` is a positive number, in order to avoid
an immediate and infinite recursive loop of refreshing the configuration.

This should still preserve the initial fix [1] where this regression appears to
have been introduced, as we should never schedule reloading with the configuration settings of:

```
APICAST_CONFIGURATION_LOADER: boot
APICAST_CONFIGURATION_CACHE: -1
```

We should also never have a situation where we'd need to account for `interval = 0`
since we fail out in `boot.init` in that case [2].

Tested locally as documented in the issue, however based on the comment in the initial
fix PR, I've not added any tests in code. Happy to do so if there's now a good way
to accomplish that!

[1] #1399
[2] https://github.com/3scale/APIcast/blob/7e7eaf6f1d584c78d999c0d09f5b65203161c402/gateway/src/apicast/configuration_loader.lua#L146-L149

Simplifies the conditional to reload configuration based on the interval set by
`APICAST_CONFIGURATION_CACHE`.

Also conditionally sets the interval to schedule.

Ensure we don't schedule reloading configuration when reloading is disabled

Performing a match on a nil value results in an exception being thrown
and bypassing the entire authorization validation process.

[THREESCALE-11435] Check for nil value when decode based64 value