Create flag to collect apex boot jars to be excluded per release config. This will replace PRODUCT_APEX_BOOT_JARS_FOR_SOURCE_BUILD_ONLY in aosp/2822531. Ignore-AOSP-First: for successful build, we need to submit this togther with ag/26332775. this cl will get cp'ed into aosp later on Bug: 327022391 Test: build device in next and trunk Merged-In: I6b3eb904caafa48e532b012a7f2cdc786766cdfe Change-Id: I6b3eb904caafa48e532b012a7f2cdc786766cdfe