s/product-services/product_services/g

Attempting to reduce the number of different spellings we have for
"product services" partition in the codebase.

Bug: 112431447
Test: m
Change-Id: I1499c60e3d6c6c9fbe2e3f30f097f83b1e837c1c
Merged-In: I1499c60e3d6c6c9fbe2e3f30f097f83b1e837c1c

private/file_contexts

@@ -359,7 +359,7 @@
 #############################
 # Product-Services files
 #
-/(product-services|system/product-services)(/.*)?               u:object_r:system_file:s0
+/(product_services|system/product_services)(/.*)?               u:object_r:system_file:s0
 
 #############################
 # Data files