Test | Fix DB Metadata tests + fix maven warnings + clean all objects

[cheenamalhotra]

The PR:

• Fixes Database Metadata tests that expect existing table in target database.
• Fixes Maven build warnings with JavaDocs
• Cleans all remaining database objects in Junit Tests (User Defined Table Types (TVP), Stored Procedures, Scalar Functions)

[codecov-io]

Codecov Report

❗ No coverage uploaded for pull request base (dev@56268e4). Click here to learn what that means.
The diff coverage is n/a.

@@          Coverage Diff           @@
##             dev    #1060   +/-   ##
======================================
  Coverage       ?   52.96%           
  Complexity     ?     3156           
======================================
  Files          ?      119           
  Lines          ?    28023           
  Branches       ?     4680           
======================================
  Hits           ?    14842           
  Misses         ?    10963           
  Partials       ?     2218

Impacted Files	Coverage Δ	Complexity Δ
.../microsoft/sqlserver/jdbc/SQLServerConnection.java	49.61% <ø> (ø)	395 <0> (?)

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