Fix | Align DatabaseMetadata.getColumns with JDBC 4.3 Specifications

[rene-ye]

Addresses #1013. Aligns ResultSet retrieved from DatabaseMetaData.getColumns() with what's described in the JDBC Specifications here. Requires a change in our current MSDN docs and possibly a major version bump.

Changes in createSqlKeyWords() due to formatting. Removed Katmai checks and explicitly uses sp_columns_100 as we no longer provide support for SQL Server 2008 and below.

SCOPE_CATALOG, SCOPE_SCHEMA, and SCOPE_TABLE explicitly always returns NULL as SQL Server currently doesn't seem to support REF column types. The description for these fields is pasted below from the JDBC specification link above:

SCOPE_CATALOG String => catalog of table that is the scope of a reference attribute (null if DATA_TYPE isn't REF)
SCOPE_SCHEMA String => schema of table that is the scope of a reference attribute (null if the DATA_TYPE isn't REF)
SCOPE_TABLE String => table name that this the scope of a reference attribute (null if the DATA_TYPE isn't REF)

[codecov-io]

Codecov Report

Merging #1016 into dev will decrease coverage by 0.33%.
The diff coverage is 73.84%.

@@             Coverage Diff              @@
##                dev    #1016      +/-   ##
============================================
- Coverage     53.43%   53.09%   -0.34%     
+ Complexity     3235     3167      -68     
============================================
  Files           119      119              
  Lines         28036    28118      +82     
  Branches       4680     4694      +14     
============================================
- Hits          14980    14930      -50     
- Misses        10911    10954      +43     
- Partials       2145     2234      +89

Impacted Files	Coverage Δ	Complexity Δ
...soft/sqlserver/jdbc/SQLServerDatabaseMetaData.java	39.8% <73.84%> (+3.62%)	76 <9> (+6)	⬆️
...oft/sqlserver/jdbc/SQLServerSymmetricKeyCache.java	56.25% <0%> (-3.75%)	5% <0%> (-3%)
...om/microsoft/sqlserver/jdbc/ReaderInputStream.java	43.95% <0%> (-3.3%)	15% <0%> (-1%)
...soft/sqlserver/jdbc/SQLServerPooledConnection.java	77.89% <0%> (-3.16%)	27% <0%> (-3%)
...m/microsoft/sqlserver/jdbc/SQLServerException.java	72.85% <0%> (-2.86%)	32% <0%> (-3%)
...ooglecode/concurrentlinkedhashmap/LinkedDeque.java	26.15% <0%> (-2.31%)	18% <0%> (-2%)
...oft/sqlserver/jdbc/SQLServerPreparedStatement.java	53.31% <0%> (-1.87%)	216% <0%> (-32%)
...SQLServerColumnEncryptionJavaKeyStoreProvider.java	63.12% <0%> (-1.42%)	10% <0%> (-2%)
...a/com/microsoft/sqlserver/jdbc/PLPInputStream.java	59.76% <0%> (-1.19%)	34% <0%> (-1%)
src/main/java/com/microsoft/sqlserver/jdbc/AE.java	74.22% <0%> (-1.04%)	0% <0%> (ø)
... and 12 more

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[lilgreenbird]

add test

[rene-ye]

add test

Existing API with tests, already being tested.

Already being tested

[ulvii]

Please add the new columns to DatabaseMetaDataTest.testGetDBColumn() to make sure they are tested.