CLI: increase body size on template render.

[eloycoto]

A user reported that when a lot of services in K8s environment started
with apicast name, APICast cannot started because of the body size of
the template.

Because the body limit is set to nil, but liquid template set to 100000
[0] and started to fail in there.

The main reason to print all ENV variables on the nginx.conf, is because
the following code [1]

[0] https://github.com/3scale/liquid-lua/blob/a7f4119e96054f08df1fb8dce2be3469eb7ffb5f/lib/liquid.lua#L2675-L2686
[1]

APIcast/gateway/http.d/init.conf

Lines 46 to 58 in fba67b0

	local resty_env = require('resty.env')
	-- WARNING, WARNING, WARNING: this is insane hack and should not be touched
	-- This file is not templated by Liquid, because it is used by not blackbox integration tests (Search for TEST_NGINX_HTTP_CONFIG).
	-- So it cannot be templated by liquid, to lift env variables and persist them in the configuration.
	-- This is a workaround so we can store environment at the time of building the config into the config itself.
	-- {% raw %} {{ ENV }} {% endraw %} is both valid Liquid template and Lua code.
	-- In Lua it is a table with another empty table inside. In Liquid it prints variable ENV.
	-- This ENV variable is defined in the main nginx.conf.liquid and injected when including this partial.
	-- The content of the ENV variable is a Lua table, so when rendered it actually can run ipairs on it.
	for k,v in pairs({{ ENV }}) do
	if type(k) == 'string' and not resty_env.value(k) then
	resty_env.set(k,v)
	end

Fix THREESCALE-6315

Signed-off-by: Eloy Coto [email protected]

[davidor]

Would be good to have a link to the issue here so we remember why this value is not the default one.