Rename spring-cloud-vault-starter-config to spring-cloud-starter-vault-config.

Align naming with existing Spring Cloud starters.

See gh-83.

_includes/build.gradle

@@ -13,5 +13,5 @@ dependencyManagement {
 }
 
 dependencies {
-	compile '{@= groupId @}:spring-cloud-vault-starter-config'
+	compile '{@= groupId @}:spring-cloud-starter-vault-config'
 }

_includes/pom.xml

@@ -13,6 +13,6 @@
 <dependencies>
     <dependency>
         <groupId>{@= groupId @}</groupId>
-        <artifactId>spring-cloud-vault-starter-config</artifactId>
+        <artifactId>spring-cloud-starter-vault-config</artifactId>
     </dependency>
 </dependencies>

index.html

@@ -54,7 +54,7 @@ For example, typical POM dependencies would be:
 ```xml
 <dependency>
     <groupId>org.springframework.cloud</groupId>
-    <artifactId>spring-cloud-vault-starter-config</artifactId>
+    <artifactId>spring-cloud-starter-vault-config</artifactId>
 </dependency>
 ```
 
@@ -133,7 +133,7 @@ Spring Cloud Vault Config comes with multiple modules supporting different integ
 <dependencies>
     <dependency>
         <groupId>org.springframework.cloud</groupId>
-        <artifactId>spring-cloud-vault-starter-config</artifactId>
+        <artifactId>spring-cloud-starter-vault-config</artifactId>
     </dependency>
 	<dependency>
         <groupId>org.springframework.cloud</groupId>

spring-cloud-vault-config.html

@@ -635,7 +635,7 @@ the test cases). Example Maven configuration:</p>
 &lt;dependencies&gt;
     &lt;dependency&gt;
         &lt;groupId&gt;org.springframework.cloud&lt;/groupId&gt;
-        &lt;artifactId&gt;spring-cloud-vault-starter-config&lt;/artifactId&gt;
+        &lt;artifactId&gt;spring-cloud-starter-vault-config&lt;/artifactId&gt;
         &lt;version&gt;{spring-cloud-version}&lt;/version&gt;
     &lt;/dependency&gt;
     &lt;dependency&gt;