Fixes for testing framework

* TestDesignerTestGatherer
 * Adds in logging and counts for tests conducted in order to gain
   confidence that all tests are being captured and executed

* org.teiid.7.7.x.test
 * Corrects the name of the main test package

* org.teiid.8.[3|4].x.test
 * Adds a LEGAL.txt of the license to the bundle
 * Corrects build.properties since the classes were not getting added to
   the created jar hence no tests were executing. Missed when running as
   a maven test plugin since the classes were being used from the
   target/classes directory

* ..xsd.ui.test/pom.xml
 * Omission of leaving this plugin as a test plugin hence getting 2 sets
   of test results when there is no need.