change mediaanalytics to mediametrics

mediaanalytics has been renamed to mediametrics; set up
so that we build the new component name instead of the old one.

Bug: 34615027
Test: clean build, proper binary generated
diff --git a/target/product/base.mk b/target/product/base.mk
index b50c282..731da7c 100644
--- a/target/product/base.mk
+++ b/target/product/base.mk
@@ -112,7 +112,7 @@
     media_cmd \
     mediadrmserver \
     mediaserver \
-    mediaanalytics \
+    mediametrics \
     mediacodec \
     mediaextractor \
     monkey \