dexoptanalyzer: Allow writing into installd's pipe

Dexoptanalyzer is getting a new mode to instruct installd on which dex
files it needs to open for itself and dex2oat from class loader context.
The file list is communicated by a pipe from a forked dexoptanalyzer
process to the installd parent. Give dexoptanalyzer permission to write
to installd's pipes.

Bug; 126674985
Test: atest installd_dexopt_test
Change-Id: Ic415e2dc543099d26681103c9d368c941d21b49a

private/dexoptanalyzer.te

@@ -17,6 +17,7 @@ allow dexoptanalyzer dalvikcache_data_file:file r_file_perms;
 allow dexoptanalyzer dalvikcache_data_file:lnk_file read;
 
 allow dexoptanalyzer installd:fd use;
+allow dexoptanalyzer installd:fifo_file { getattr write };
 
 # Allow reading secondary dex files that were reported by the app to the
 # package manager.