revert fastjsonparser

[fmoehler]

Checklist:

Please check each of the boxes below for which you have completed the corresponding task:

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have added tests that prove my fix is effective or that my feature works
• All unit tests pass locally (after my changes)
• Rubocop reports zero errors (after my changes)

Please include below the summary portions of the output from the following 2 scripts:

pushd src/bosh_azure_cpi
  bundle install
  bundle exec rake spec:unit
  bundle exec rake rubocop
popd

NOTE: Please see how to setup dev environment and run unit tests in docs/development.md.

Unit Test output:

1034 examples, 0 failures

Rubocop output:

190 files inspected, 50 offenses detected, 28 offenses autocorrectable

--> not related to these changes

Changelog

[jpalermo]

@mvach since you created the original fastjsonparser PR could you take a look at this. Rolling this back is most likely to affect the large environments you all work with.

[fmoehler]

@jpalermo unfortunately @mvach is currently OOO.

We discussed internally and checked also why it was implemented back then. We concluded that it can be removed as the issue we had (timeout due to too long deployment time) was mitigated meanwhile by having smaller deployment sizes.

Furthermore, the fastjsonparser seems to be not maintained anymore, as there was no new version for two years and issues also remain in status "Open".

[a-hassanin]

We discussed it internally. Reverting due to the issue: anilmaurya/fast_jsonparser#25

We are still keeping an eye on performance here and if needed use something better for JSON parsing.