Consolidating PM owner definition and adding new owners.

Change-Id: If4b080755701452c53d55f26380e887dc3944dbf
diff --git a/PACKAGE_MANAGER_OWNERS b/PACKAGE_MANAGER_OWNERS
new file mode 100644
index 0000000..e4549b4
--- /dev/null
+++ b/PACKAGE_MANAGER_OWNERS
@@ -0,0 +1,3 @@
+chiuwinson@google.com
+patb@google.com
+schfan@google.com
\ No newline at end of file