Add /system/lib[64] to LD_LIBRARY_PATH

[ Merge of http://go/wvgerrit/192851 ]

When running widevine unit/integration tests the script sets
the LD_LIBRARY_PATH to include /vendor/lib[64] and
/system/lib[64]/vndk-R so that shared libraries can be found.

/system/lib[64] also needs to be included so that
libbinder.so and libbinder_ndk.so are also picked up.

Bug: 325595891
Test: ./build_and_run_all_tests
Change-Id: I411bb98474eb7e65bf9070c029869a9d4d220673

libwvdrmengine/run_all_unit_tests.sh

@@ -27,7 +27,7 @@ elif [ 0 -eq `expr index "$GTEST_FILTER" "-"` ]; then
 fi
 
 # The Android supplement allows for installation in these paths:
-OEC_PATHS=/vendor/lib64:/vendor/lib:/system/lib64/vndk-R:/system/lib/vndk-R
+OEC_PATHS=/system/lib64:/system/lib/:/vendor/lib64:/vendor/lib:/system/lib64/vndk-R:/system/lib/vndk-R
 
 # Execute a command in "adb shell" and capture the result.
 adb_shell_run() {
@@ -49,7 +49,7 @@ adb_shell_run() {
   # to load. We must reverse the library path in this case so we don't attempt
   # to load 64-bit libraries with the 32-bit liboemcrypto.so.
   if ! adb $SERIAL_NUM shell ls /vendor/lib64/liboemcrypto.so &> /dev/null; then
-    OEC_PATHS=/vendor/lib:/vendor/lib64
+    OEC_PATHS=/system/lib:/system/lib64/:/vendor/lib:/vendor/lib64:/system/lib/vndk-R:/system/lib64/vndk-R
   fi
   adb $SERIAL_NUM shell "LD_LIBRARY_PATH=$OEC_PATHS GTEST_FILTER=$GTEST_FILTER $@ $test_file" \|\| echo "$adb_error" | tee "$tmp_log"
   ! grep -Fq "$adb_error" "$tmp_log"