[SSSD] [PATCH] BUILD: Do not build libsss_ad_common.la as standard library

[Lukas Slebodnik]

ehlo,

libsss_ad_common.la was a dynamic library and was linked just with unit tests.
It was a workaroud because module libsss_ad.so cannot be linked with tests
without portability issues. But it was addted to pkglib_LTLIBRARIES
and therefore it was installed with other libraries.
This patch changed it and libsss_ad_test.la (old name libsss_ad_common.la)
will be compiled only for unit tests (check_LTLIBRARIES) and will not
be installed with command "make install".

LS