DatabaseInstaller::setVarsFromRequest needs array

Method is not marked as var args.

Bug: 58434
Follow-Up: I920b0231db1b70b68c6c8907257c288a0e112668
Change-Id: Ief7f7c06e75efbe7ae1da13f5021a9062483f690
(cherry picked from commit 29c2ab3da0d561428f1fc969daadcac463e675b6)
Merge "DatabaseInstaller::setVarsFromRequest needs array" into REL1_22