Fix backwards compatibility for changes introduced in 1.14.0

[tiborbuzasi]

Doing a Spryker upgrade caused can('SeePricePermissionPlugin') in Twig always return false.

After hours of debugging we narrowed down the issue to the update of the spryker/synchronization package.

If $keySuffix is an empty string in DefaultKeyGeneratorPlugin::generateKey()

• prior to 1.14.0 the returned value was $this->getResource() e.g. resource
• after 1.14.0 the returned value is sprintf('%s:%s', $this->getResource(), $keySuffix) e.g. resource:

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[dereuromark]

1.13.1...1.14.0#diff-170b73375ea459d71f752906645a9eeb02bef3021504dc91ab3498e3763a98f2L46-L48 indeed did remove that part as part of the return not supposed to be empty according to static analyzers.
We will have to revert this then.

[gechetspr]

Thank you for the PR! We will take it in process and will ping you in this PR when we release it.