Added queries for memory allocations

These queries calculate the allocated memory per Rails/Grape/Sidekiq
controller/worker per minute. This data includes the 95th percentile,
the 99th percentile, the mean, and the max value.

queries/grape/grape_allocated_memory_per_action.txt

+CREATE CONTINUOUS QUERY grape_allocated_memory_per_action ON $DATABASE
+BEGIN
+    SELECT percentile(allocated_memory, 95) AS allocated_memory_95th,
+           percentile(allocated_memory, 99) AS allocated_memory_99th,
+           mean(allocated_memory) AS allocated_memory_mean,
+           max(allocated_memory) AS allocated_memory_max
+    INTO downsampled.grape_allocated_memory_per_action
+    FROM "$DEFAULT_RETENTION_POLICY".rails_transactions
+    WHERE action =~ /^Grape#/
+    GROUP BY time(1m), action
+END

queries/rails/rails_allocated_memory_per_action.txt

+CREATE CONTINUOUS QUERY rails_allocated_memory_per_action ON $DATABASE
+BEGIN
+    SELECT percentile(allocated_memory, 95) AS allocated_memory_95th,
+           percentile(allocated_memory, 99) AS allocated_memory_99th,
+           mean(allocated_memory) AS allocated_memory_mean,
+           max(allocated_memory) AS allocated_memory_max
+    INTO downsampled.rails_allocated_memory_per_action
+    FROM "$DEFAULT_RETENTION_POLICY".rails_transactions
+    WHERE action =~ /.+/
+    AND action !~ /^Grape#/
+    GROUP BY time(1m), action
+END

queries/sidekiq/sidekiq_allocated_memory_per_action.txt

+CREATE CONTINUOUS QUERY sidekiq_allocated_memory_per_action ON $DATABASE
+BEGIN
+    SELECT percentile(allocated_memory, 95) AS allocated_memory_95th,
+           percentile(allocated_memory, 99) AS allocated_memory_99th,
+           mean(allocated_memory) AS allocated_memory_mean,
+           max(allocated_memory) AS allocated_memory_max
+    INTO downsampled.sidekiq_allocated_memory_per_action
+    FROM "$DEFAULT_RETENTION_POLICY".sidekiq_transactions
+    GROUP BY time(1m), action
+END