[BUGFIX] Install tool performs all db updates

The update wizard should only perform database
updates for the caching framework tables. At
the moment it silently and automatically executes
all ext_tables.sql files.

Resolves: #49591
Releases: 6.2
Change-Id: I4645d729dfa22917ae56ce03955d2f53a7a70c1c
Reviewed-on: https://review.typo3.org/21799
Reviewed-by: Christian Kuhn
Tested-by: Christian Kuhn
Reviewed-by: Anja Leichsenring
Tested-by: Anja Leichsenring