resolver codenarc issues

src/main/groovy/org/boozallen/plugins/jte/util/FileSystemCacheKey.groovy

@@ -61,6 +61,8 @@ import org.jenkinsci.plugins.workflow.flow.FlowExecutionOwner
  */
 class FileSystemCacheKey {
 
+    private static final int MULTIPLIER = 31
+
     FlowExecutionOwner owner
     SCM scm
     SCMSource scmSource
@@ -88,26 +90,13 @@ class FileSystemCacheKey {
 
         FileSystemCacheKey that = (FileSystemCacheKey) o
 
-        if (owner != that.owner) {
-            return false
-        }
-        if (scm != that.scm) {
-            return false
-        }
-        if (scmHead != that.scmHead) {
-            return false
-        }
-        if (scmRevision != that.scmRevision) {
-            return false
-        }
-        if (scmSource != that.scmSource) {
-            return false
-        }
-
-        return true
+        return owner == that.owner &&
+                scm == that.scm &&
+                scmHead == that.scmHead &&
+                scmRevision == that.scmRevision &&
+                scmSource == that.scmSource;
     }
 
-
     /**
      * Generates a hash code for this FileSystemCacheKey instance.
      * The hash code is computed based on the {@code owner}, {@code scm}, {@code scmSource},
@@ -122,10 +111,11 @@ class FileSystemCacheKey {
     int hashCode() {
         int result
         result = (owner != null ? owner.hashCode() : 0)
-        result = 31 * result + (scm != null ? scm.hashCode() : 0)
-        result = 31 * result + (scmSource != null ? scmSource.hashCode() : 0)
-        result = 31 * result + (scmHead != null ? scmHead.hashCode() : 0)
-        result = 31 * result + (scmRevision != null ? scmRevision.hashCode() : 0)
+        result = MULTIPLIER * result + (scm != null ? scm.hashCode() : 0)
+        result = MULTIPLIER * result + (scmSource != null ? scmSource.hashCode() : 0)
+        result = MULTIPLIER * result + (scmHead != null ? scmHead.hashCode() : 0)
+        result = MULTIPLIER * result + (scmRevision != null ? scmRevision.hashCode() : 0)
         return result
     }
+
 }