fdo#67388: installer: Fix path to libgetuid.so again. Hardcode it.

(cherry picked from commit 203e84d434de904add0b4426e87a4eb0a9a50c66)

Change-Id: I5bcbb59a0f49e925d60f225b0f8f925d6d5dc468
Add back check for missing libgetuid.so.

If the library does not work, things like fdo#67388 happen.

Change-Id: I3390fdb6f2cdf24145ddde4466146f91e5dfde82
(cherry picked from commit 2b1fcd466eea63cd8e694693255b765c863fda8c)