Add spring-boot-configuration-processor dependency to groovy processor

applications/processor/groovy-processor/README.adoc

@@ -8,6 +8,9 @@ A Processor that applies a Groovy script against messages.
 The **$$groovy-processor$$** $$processor$$ has the following options:
 
 //tag::configuration-properties[]
+$$groovy-processor.script$$:: $$Reference to a script used to process messages.$$ *($$Resource$$, default: `$$<none>$$`)*
+$$groovy-processor.variables$$:: $$Variable bindings as a new line delimited string of name-value pairs, e.g. 'foo=bar\n baz=car'.$$ *($$Properties$$, default: `$$<none>$$`)*
+$$groovy-processor.variables-location$$:: $$The location of a properties file containing custom script variable bindings.$$ *($$Resource$$, default: `$$<none>$$`)*
 //end::configuration-properties[]
 
 //end::ref-doc[]

applications/processor/groovy-processor/pom.xml

@@ -74,6 +74,11 @@
                 </exclusion>
             </exclusions>
         </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-configuration-processor</artifactId>
+            <scope>provided</scope>
+        </dependency>
     </dependencies>
 
     <build>