Fix to Bug64776 - Add the possibility to add SecurityProviders

[Timo-1979]

Description

Add the possibility to load new Security-Provider at the start of JMeter, these Prover could be added and configured via JMeter-Properties.

Motivation and Context

For testing of a service that need special elicpic curves that are available in the BouncyCastleProvider. But to solve the proble it was necessary not only to load this provier, it was requied to load BouncyCastleJsseProvider, too. But the BouncyCastleJsseProvider must be configured to use the BouncyCastleProvider. This was not possible by modify the JVM Setting (java.security). And the creation of a add on that adds the security-providers at test-start was unseccesful.

How Has This Been Tested?

For the two method, for loading the Secrurity-Provider: I've created some JUnit-Test.

Types of changes

• New feature (non-breaking change which adds functionality)

Checklist:

• My code follows the code style of this project.
• I have updated the documentation accordingly. (Added a section in the properties_reference.xml)

[codecov-io]

Codecov Report

Merging #629 into master will increase coverage by 0.02%.
The diff coverage is 93.75%.

@@             Coverage Diff              @@
##             master     #629      +/-   ##
============================================
+ Coverage     55.26%   55.28%   +0.02%     
- Complexity    10078    10084       +6     
============================================
  Files          1038     1038              
  Lines         63853    63883      +30     
  Branches       7232     7235       +3     
============================================
+ Hits          35289    35319      +30     
+ Misses        26064    26063       -1     
- Partials       2500     2501       +1     

Impacted Files	Coverage Δ	Complexity Δ
...org/apache/jmeter/util/SecurityProviderLoader.java	93.54% <93.54%> (ø)	7.00 <7.00> (?)
...c/core/src/main/java/org/apache/jmeter/JMeter.java	39.97% <100.00%> (+0.07%)	45.00 <0.00> (ø)
...n/java/org/apache/jmeter/reporters/Summariser.java	84.73% <0.00%> (-0.77%)	17.00% <0.00%> (-1.00%)
.../version/org/apache/jmeter/util/JMeterVersion.java
...a/org/apache/jmeter/timers/PoissonRandomTimer.java	78.37% <0.00%> (+5.40%)	10.00% <0.00%> (+1.00%)

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