Address missing dependencies or executables

[ Merge of http://go/wvgerrit/195850 ]

Since Widevine device builds now include APEX prebuilts,
shared library dependencies for the prebuilts are in
are in /apex/com.google.android.widevine/lib[64] rather
than /system/lib[64] or /vendor/lib[64]. When tests are
run not all the dependencies are present.

These changes include
* Statically linking missing dependencies
* Adding /apex/com.google.android.widevine/lib[64] to
  the shared library path
* Searching for some of the test executables in
  /data/nativetest[64]/vendor/

Bug: 329888778
Bug: 329891889
Bug: 329891175
Bug: 329891049

Test: ./build_and_run_all_unit_tests.sh
Change-Id: I067685cedc7701c4e6502bdac98b53e22b61ad1e

libwvdrmengine/mediacrypto/test/Android.mk

@@ -25,11 +25,15 @@ LOCAL_STATIC_LIBRARIES := \
   libcdm_protos \
   libcdm_utils \
   libjsmn \
+  libjsoncpp \
   libgmock \
   libgmock_main \
   libgtest \
+  libwvaidl \
+  libwvdrmcryptoplugin_aidl \
   libwvlevel3 \
   libwv_odk \
+  libPlatformProperties \
 
 LOCAL_SHARED_LIBRARIES := \
   android.hardware.drm-V1-ndk \
@@ -41,7 +45,6 @@ LOCAL_SHARED_LIBRARIES := \
   liblog \
   libprotobuf-cpp-lite \
   libutils \
-  libwvaidl \
   wv_media_drm_flags_c_lib \
 
 LOCAL_HEADER_LIBRARIES := \