Mas d31 i413 (#415)

* Allow snapshots to be reused in queries

Allow for a full bookie snapshot to be re-used for multiple queries, not just KV fetches.

* Reduce log noise

The internal dummy tag is expected so should not prompt a log on reload

* Snapshot should have same status of active db

wrt head_only and head_lookup

* Allow logging to specified on snapshots

* Shutdown snapshot bookie is primary goes down

Inker and Penciller already will shut down based on `erlang:monitor/2`

* Review feedback

Formatting and code readability fixes

src/leveled_log.erl

@@ -48,6 +48,8 @@
             {info, <<"Snapshot starting with Ink ~w Pcl ~w">>},
         b0003 =>
             {info, <<"Bookie closing for reason ~w">>},
+        b0004 =>
+            {warn, <<"Bookie snapshot exiting as master store ~w is down for reason ~p">>},
         b0005 =>
             {info, <<"LedgerSQN=~w at startup">>},
         b0006 =>
@@ -83,17 +85,17 @@
         p0005 =>
             {debug, <<"Delete confirmed as file ~s is removed from Manifest">>},
         p0007 =>
-            {debug, <<"Sent release message for cloned Penciller following close for reason ~w">>},
+            {debug, <<"Shutdown complete for cloned Penciller for reason ~w">>},
         p0008 =>
             {info, <<"Penciller closing for reason ~w">>},
         p0010 =>
             {info, <<"level zero discarded_count=~w on close of Penciller">>},
         p0011 =>
-            {info, <<"Shutdown complete for Penciller for reason ~w">>},
+            {debug, <<"Shutdown complete for Penciller for reason ~w">>},
         p0012 =>
             {info, <<"Store to be started based on manifest sequence number of ~w">>},
         p0013 =>
-            {warn, <<"Seqence number of 0 indicates no valid manifest">>},
+            {info, <<"Seqence number of 0 indicates no valid manifest">>},
         p0014 =>
             {info, <<"Maximum sequence number of ~w found in nonzero levels">>},
         p0015 =>
@@ -246,6 +248,10 @@
             {warn, <<"Journal SQN of ~w is below Ledger SQN of ~w anti-entropy will be required">>},
         i0026 =>
             {info, <<"Deferring shutdown due to snapshot_count=~w">>},
+        i0027 =>
+            {debug, <<"Shutdown complete for cloned Inker for reason ~w">>},
+        i0028 =>
+            {debug, <<"Shutdown complete for Inker for reason ~w">>},
         ic001 =>
             {info, <<"Closed for reason ~w so maybe leaving garbage">>},
         ic002 =>