Fix mismatching Parameter initial field values

Field values should match `defaultValue` of `Parameter` annotation.
Had to adjust the unit tests because they were apparently manually
constructing the Mojos and therefore not using the `Parameter#defaultValue`.

Also removes the parameters from `TestUnpackDependenciesMojo#dotestArtifactExceptions`
because they were apparently unused since commit 809bfe1.

src/main/java/org/apache/maven/plugins/dependency/fromDependencies/AbstractFromDependenciesMojo.java

@@ -104,7 +104,7 @@ public abstract class AbstractFromDependenciesMojo extends AbstractDependencyFil
      * @since 2.0-alpha-2
      */
     @Parameter(property = "mdep.failOnMissingClassifierArtifact", defaultValue = "false")
-    protected boolean failOnMissingClassifierArtifact = true;
+    protected boolean failOnMissingClassifierArtifact;
 
     /**
      * @return Returns the outputDirectory.

src/main/java/org/apache/maven/plugins/dependency/fromDependencies/CopyDependenciesMojo.java

@@ -64,7 +64,7 @@ public class CopyDependenciesMojo extends AbstractFromDependenciesMojo {
      * @since 2.0
      */
     @Parameter(property = "mdep.copyPom", defaultValue = "false")
-    protected boolean copyPom = true;
+    protected boolean copyPom;
 
     @Component
     private CopyUtil copyUtil;

src/test/java/org/apache/maven/plugins/dependency/fromDependencies/TestCopyDependenciesMojo.java

@@ -429,6 +429,7 @@ public void testArtifactResolutionException() throws MojoFailureException {
 
     public void dotestArtifactExceptions() throws MojoFailureException {
         mojo.classifier = "jdk";
+        mojo.failOnMissingClassifierArtifact = true;
         mojo.type = "java-sources";
 
         try {

src/test/java/org/apache/maven/plugins/dependency/fromDependencies/TestUnpackDependenciesMojo.java

@@ -491,16 +491,13 @@ public void dotestClassifierType(String testClassifier, String testType) throws
         }
     }
 
-    public void testArtifactNotFound() throws Exception {
-        dotestArtifactExceptions(false, true);
+    public void testArtifactResolutionException() throws MojoFailureException {
+        dotestArtifactExceptions();
     }
 
-    public void testArtifactResolutionException() throws Exception {
-        dotestArtifactExceptions(true, false);
-    }
-
-    public void dotestArtifactExceptions(boolean are, boolean anfe) throws Exception {
+    public void dotestArtifactExceptions() throws MojoFailureException {
         mojo.classifier = "jdk";
+        mojo.failOnMissingClassifierArtifact = true;
         mojo.type = "java-sources";
 
         try {