scripts/unit-test: ldconfig should be run before each build

We need to make sure our ld.so.cache is updated for each of the builds
in case a dependency was just installed before running the next one.

Tested:
    Ran on phosphor-net-ipmid and the build still passes.

Change-Id: I1481218a23ed895a8b254f2d18f9973bb498c40d
Signed-off-by: William A. Kennington III <wak@google.com>
1 file changed