Allow SSL connection to Backend

[adescoms]

Allow SSL connection to backend (PostgreSQL)

[codecov-io]

Codecov Report

Merging #160 into devel will increase coverage by <.01%. The diff coverage is 20%.

@@             Coverage Diff              @@
##              devel     #160      +/-   ##
============================================
+ Coverage     16.86%   16.86%   +<.01%     
- Complexity     1358     1360       +2     
============================================
  Files           750      750              
  Lines         26492    26509      +17     
  Branches       2329     2331       +2     
============================================
+ Hits           4468     4472       +4     
- Misses        21714    21727      +13     
  Partials        310      310

Impacted Files	Coverage Δ	Complexity Δ
...torodb/backend/postgresql/PostgreSqlDbBackend.java	0% <0%> (ø)	0 <0> (ø)	:x:
...ain/java/com/torodb/backend/BackendConfigImpl.java	0% <0%> (ø)	0 <0> (ø)	:x:
...om/torodb/packaging/config/util/BundleFactory.java	0% <0%> (ø)	0 <0> (ø)	:x:
...a/com/torodb/backend/BackendConfigImplBuilder.java	0% <0%> (ø)	0 <0> (ø)	:x:
...n/src/main/java/com/torodb/stampede/CliConfig.java	6.47% <0%> (-0.15%)	5 <0> (ø)
...onfig/model/backend/postgres/AbstractPostgres.java	0% <0%> (ø)	0 <0> (ø)	:x:
...dalone/config/model/backend/postgres/Postgres.java	100% <100%> (ø)	10 <1> (+1)	:white_check_mark:
...ampede/config/model/backend/postgres/Postgres.java	93.33% <100%> (+1.02%)	9 <1> (+1)	:white_check_mark:

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