Bumping nexus-staging-maven-plugin to 1.7.0

pom.xml

@@ -43,6 +43,7 @@
         <maven-javadoc-plugin.version>3.2.0</maven-javadoc-plugin.version>
         <maven-source-plugin.version>3.0.1</maven-source-plugin.version>
         <maven-surefire-plugin.version>2.9</maven-surefire-plugin.version>
+        <nexus-staging-maven-plugin.version>1.7.0</nexus-staging-maven-plugin.version>
         <!-- Note: using project checkstyle with AOSP style
         find the default google java checkstyle config here -
         <checkstyle.config.location>google_checks.xml</checkstyle.config.location>
@@ -99,7 +100,7 @@
                     <plugin>
                         <groupId>org.sonatype.plugins</groupId>
                         <artifactId>nexus-staging-maven-plugin</artifactId>
-                        <version>1.6.13</version>
+                        <version>${nexus-staging-maven-plugin.version}</version>
                         <extensions>true</extensions>
                         <configuration>
                             <serverId>nexus</serverId>