Fix shared library locations

[brooksn]

What this PR does / why we need it:

Fixes bugs introduced by #112 , where e2e tests are failing with these errors:

E1012 14:16:04.875048      15 controller.go:179] Unexpected failure reloading the backend:
871s
3564	
871s
3565	-------------------------------------------------------------------------------
871s
3566	Error: exit status 1
871s
3567	2022/10/12 14:16:04 [emerg] 78#78: dlopen() "/etc/nginx/modules/ngx_http_modsecurity_module.so" failed (liblmdb.so.0.0.0: cannot open shared object file: No such file or directory) in /tmp/nginx/nginx-cfg2928146365:7

Error: exit status 1
2022/10/12 19:00:00 [emerg] 281#281: dlopen() "/etc/nginx/modules/ngx_http_modsecurity_module.so" failed (liblmdb.so.0.0.0: cannot open shared object file: No such file or directory) in /tmp/nginx/nginx-cfg3824562072:7
nginx: [emerg] dlopen() "/etc/nginx/modules/ngx_http_modsecurity_module.so" failed (liblmdb.so.0.0.0: cannot open shared object file: No such file or directory) in /tmp/nginx/nginx-cfg3824562072:7
nginx: configuration file /tmp/nginx/nginx-cfg3824562072 test failed

Which issue this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close that issue when PR gets merged): fixes #

Special notes for your reviewer: