Bump JSON Schema version and lower cache size.

[jeschkies]

Summary:
This will lower the memory usage by ignoring the JSON schema cache.
Since we are not using any URIs to load the JSON schema it is cached
each time a new.

JIRA issues: D2IQ-68617

[jeschkies]

The benchmark uses wrk with the following LUA script

❯ cat render_package.lua
wrk.method = "POST"
wrk.body   = '{"appId": "mom", "options": {}, "packageName": "marathon", "packageVersion": "1.7.188"}'
wrk.headers["Accept"] = "application/vnd.dcos.package.render-response+json;charset=utf-8;version=v1"
wrk.headers["Content-Type"] = "application/vnd.dcos.package.render-request+json;charset=utf-8;version=v1"

and is run via

❯ wrk -s render_package.lua -d 5m -t 10 http://127.0.0.1:7070/package/render

This is a run with this patch

compare it to the current master

[pierrebeitz]

the python-error is fixed by now. next step is to fix masters CI.