Update code to compile with AKV v1.0.0

[xiangyushawn]

for issue #389

after updating to azure-keyvault v1.0.0, the project breaks. The PR fixes it.

However, it will also break user's existing programs that use AKV. We will need to document this breaking change:

Previous, in order to construct SQLServerColumnEncryptionAzureKeyVaultProvider object, client code needs to construct a SQLServerKeyVaultAuthenticationCallback object first by implementing SQLServerKeyVaultAuthenticationCallback interface (with clientID and clientKey) and also provide an ExecutorService object. By doing so, user needs to handle SQLServerKeyVaultAuthenticationCallback interface and take care of the ExecutorService object (e.g. shutdown) by themselves.

Now, with the latest version of AKV, user can create SQLServerColumnEncryptionAzureKeyVaultProvider object directly with clientID and clientKey. Without implementing interface or providing ExecutorService, it reduces complexity on user side.

SQLServerColumnEncryptionAzureKeyVaultProvider akvProvider = new SQLServerColumnEncryptionAzureKeyVaultProvider(clientID, clientKey);

[codecov-io]

Codecov Report

Merging #397 into dev will increase coverage by 0.04%.
The diff coverage is 0%.

@@             Coverage Diff              @@
##                dev     #397      +/-   ##
============================================
+ Coverage     40.12%   40.16%   +0.04%     
+ Complexity     1890     1888       -2     
============================================
  Files           107      107              
  Lines         24482    24472      -10     
  Branches       4038     4039       +1     
============================================
+ Hits           9823     9830       +7     
+ Misses        12820    12798      -22     
- Partials       1839     1844       +5

Flag	Coverage Δ	Complexity Δ
#JDBC41	40.07% <0%> (+0.07%)	1884 <0> (+2)	⬆️
#JDBC42	39.97% <0%> (-0.03%)	1880 <0> (-2)

Impacted Files	Coverage Δ	Complexity Δ
...om/microsoft/sqlserver/jdbc/SQLServerResource.java	100% <ø> (ø)	4 <0> (ø)	⬇️
...QLServerColumnEncryptionAzureKeyVaultProvider.java	0% <0%> (ø)	0 <0> (ø)	⬇️
...m/microsoft/sqlserver/jdbc/KeyVaultCredential.java	0% <0%> (ø)	0 <0> (ø)	⬇️
...om/microsoft/sqlserver/jdbc/ReaderInputStream.java	44.94% <0%> (-1.13%)	16% <0%> (-1%)
...om/microsoft/sqlserver/jdbc/SQLServerBulkCopy.java	49.43% <0%> (+0.14%)	209% <0%> (-1%)	⬇️
...in/java/com/microsoft/sqlserver/jdbc/IOBuffer.java	45.07% <0%> (+0.2%)	0% <0%> (ø)	⬇️

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