Rename variables(GoogleContainerTools#4067)

Author: Paul van der Bles

jib-gradle-plugin/src/main/java/com/google/cloud/tools/jib/gradle/ContainerParameters.java

@@ -113,10 +113,10 @@ public void setJvmFlags(Provider<List<String>> jvmFlags) {
   public MapProperty<String, String> getEnvironment() {
     String environmentProperty = System.getProperty(PropertyNames.CONTAINER_ENVIRONMENT);
     if (environmentProperty != null) {
-      Map<String, String> parsedLabels =
+      Map<String, String> parsedEnvironment =
               ConfigurationPropertyValidator.parseMapProperty(environmentProperty);
-      if (!parsedLabels.equals(environment.get())) {
-        environment.set(parsedLabels);
+      if (!parsedEnvironment.equals(environment.get())) {
+        environment.set(parsedEnvironment);
       }
     }
     return environment;

jib-gradle-plugin/src/test/java/com/google/cloud/tools/jib/gradle/JibPluginTest.java

@@ -370,8 +370,8 @@ public void testLazyEvalForLabels() {
 
   @Test
   public void testLazyEvalForEnvironment() {
-    BuildResult showLabels = testProject.build("showenvironment", "-Djib.console=plain");
-    assertThat(showLabels.getOutput())
+    BuildResult showEnvironment = testProject.build("showenvironment", "-Djib.console=plain");
+    assertThat(showEnvironment.getOutput())
             .contains(
                     "environment contains values [var1:val1updated, var2:val2updated]");
   }