Bump folsom to 1.2.1 as it fixes a connection leak

[jsferrei]

@dmichel1 I'm going to run some quick tests on this first but spotify/folsom#103 has been fixed in 1.2.1

[codecov]

Codecov Report

Merging #395 into master will decrease coverage by 0.09%.
The diff coverage is 0%.

@@             Coverage Diff             @@
##             master     #395     +/-   ##
===========================================
- Coverage     46.91%   46.81%   -0.1%     
+ Complexity     2692     2690      -2     
===========================================
  Files           644      646      +2     
  Lines         17606    17634     +28     
  Branches       1283     1283             
===========================================
- Hits           8260     8256      -4     
- Misses         8871     8901     +30     
- Partials        475      477      +2

Impacted Files	Coverage Δ	Complexity Δ
.../heroic/statistics/noop/NoopMemcachedReporter.java	0% <0%> (ø)	0 <0> (?)
...ic/statistics/semantic/SemanticHeroicReporter.java	0% <0%> (ø)	0 <0> (ø)	⬇️
...ify/heroic/statistics/noop/NoopHeroicReporter.java	84.61% <0%> (-7.06%)	11 <0> (ø)
...gest/elasticsearch/ElasticsearchSuggestModule.java	59.45% <0%> (-0.55%)	6 <0> (ø)
...ata/elasticsearch/ElasticsearchMetadataModule.java	59.64% <0%> (-0.53%)	6 <0> (ø)
...statistics/semantic/SemanticMemcachedReporter.java	0% <0%> (ø)	0 <0> (?)
...m/spotify/heroic/aggregation/simple/MaxBucket.java	42.85% <0%> (-9.53%)	4% <0%> (-1%)
...m/spotify/heroic/aggregation/simple/MinBucket.java	42.85% <0%> (-9.53%)	4% <0%> (-1%)

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[dmichel1]

LGTM -

re: memcached metrics there is also a way to enable the semantic metrics that are part of the folsom client, https://github.com/spotify/folsom/blob/master/folsom-semantic-metrics/src/main/java/com/spotify/folsom/client/SemanticFolsomMetrics.java.

Your approach allows for finer grained metrics since its per consumer-type.