Feat/Soft-Deprecate system-sphinx from System API

[slopezz]

System is already using now system-searchd instead of system-sphinx.

So system-sphinx has been soft-deprecated:

• Searchd statefulset is enabled by default
• Searchd is the default searchAdress (it still permits use an external sphinx)
• As sphinx spec is still used on deployed System CRs ( spec.sphinx.config.enabled: false), it has not been removed 100% (just left this specific CR fields available although its controllers have already been removed)
• Sphinx will be completely removed on a follow-up PR once all deployed CRs has been updated by removing the field spec.sphinx.config.enabled: false

In addition, a few typos have been fixed on different generators, including system-sphinx label on system-console statefulset, forcing a rollout.

An alpha release has been tested successfully in staging, desired consequences:

• system-sphinx service removed
• system-console statefulset rollout because of previous incorrect sphinx label

/kind cleanup
/kind release
/priority important-soon
/assign

[raelga]

/lgtm

[3scale-robot]

LGTM label has been added.

Git tree hash: f67b3cb3b8baeabe9aed355b0c4d599a3de3df16

[slopezz]

/approve

[3scale-robot]

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