gave explicit name to projects in test_standalone poms

Author: tomasstupka

graalpython/com.oracle.graal.python.test/src/tests/standalone/check_home_pom.xml

@@ -45,7 +45,7 @@ SOFTWARE.
   <modelVersion>4.0.0</modelVersion>
 
   <groupId>org.apache.maven.plugin.my.unit</groupId>
-  <artifactId>project-to-test</artifactId>
+  <artifactId>project-check-home</artifactId>
   <version>1.0-SNAPSHOT</version>
   <packaging>jar</packaging>
   <name>Test MyMojo</name>

graalpython/com.oracle.graal.python.test/src/tests/standalone/fail_without_graalpy_dep_pom.xml

@@ -45,7 +45,7 @@ SOFTWARE.
   <modelVersion>4.0.0</modelVersion>
 
   <groupId>org.apache.maven.plugin.my.unit</groupId>
-  <artifactId>project-to-test</artifactId>
+  <artifactId>project-fail-without-graalpy-dep</artifactId>
   <version>1.0-SNAPSHOT</version>
   <packaging>jar</packaging>
   <name>Test MyMojo</name>

graalpython/com.oracle.graal.python.test/src/tests/standalone/prepare_venv_pom.xml

@@ -45,7 +45,7 @@ SOFTWARE.
   <modelVersion>4.0.0</modelVersion>
 
   <groupId>org.apache.maven.plugin.my.unit</groupId>
-  <artifactId>project-to-test</artifactId>
+  <artifactId>project-prepare-venv</artifactId>
   <version>1.0-SNAPSHOT</version>
   <packaging>jar</packaging>
   <name>Test MyMojo</name>