[manual] Move puppet modules to the top level

The new puppet.conf file has to be moved into place manually.

(imported from commit 253d9a95386dae8c803a998ce2dc7e8be40c880a)

puppet/zulip-internal/files/postgresql/40-postgresql.conf.master

@@ -0,0 +1,16 @@
+# Shared memory settings
+
+# Maximum total size of shared memory in pages (normally 4096 bytes)
+kernel.shmall = 6553600
+# Maximum size of shared memory segment in bytes
+kernel.shmmax = 26843545600
+
+# Virtual memory settings
+vm.swappiness = 0
+vm.overcommit_memory = 2
+
+# We don't want these numbers to be too large or else performance
+# will be too spiky.  These seem to give a good balance between low
+# numbers and sequential write performance
+vm.dirty_ratio = 5
+vm.dirty_background_ratio = 2