Declare 'com.google.code.findbugs:jsr305' as a compileOnly/testCompileOnly depedency to cleanup Gradle build warnings.

Without this dependency the Gradle build logs warnings about:

> Task :spring-geode-autoconfigure:compileTestJava
warning: unknown enum constant When.MAYBE
  reason: class file for javax.annotation.meta.When not found
...

gradle.properties

@@ -2,6 +2,7 @@ org.gradle.jvmargs=-Xmx2g -Dfile.encoding=UTF-8
 antlrVersion=2.7.7
 apacheGeodeVersion=1.12.0
 byteBuddyVersion=1.10.11
+findbugsVersion=3.0.2
 mockitoVersion=3.3.3
 multithreadedtcVersion=1.01
 pivotalGemFireVersion=9.10.0

spring-geode-actuator-autoconfigure/spring-geode-actuator-autoconfigure.gradle

@@ -8,6 +8,8 @@ dependencies {
     compile project(":spring-geode-actuator")
     compile project(":spring-geode-autoconfigure")
 
+    compileOnly "com.google.code.findbugs:jsr305:$findbugsVersion"
+
     testCompile "junit:junit"
     testCompile "org.assertj:assertj-core"
     testCompile "org.mockito:mockito-core"

spring-geode-autoconfigure/spring-geode-autoconfigure.gradle

@@ -11,6 +11,8 @@ dependencies {
 
 	compile project(":spring-geode")
 
+	compileOnly "com.google.code.findbugs:jsr305:$findbugsVersion"
+
 	optional project(':apache-geode-extensions')
 
 	optional "org.springframework.boot:spring-boot-autoconfigure-processor"
@@ -34,6 +36,8 @@ dependencies {
 		exclude group: "org.apache.logging.log4j", module: "log4j-core"
 	}
 
+	testCompileOnly "com.google.code.findbugs:jsr305:$findbugsVersion"
+
 	testRuntime "javax.cache:cache-api"
 	testRuntime "org.apache.geode:geode-http-service:$apacheGeodeVersion"
 	testRuntime "org.apache.geode:geode-web:$apacheGeodeVersion"

spring-geode-samples/boot/configuration/spring-geode-samples-boot-configuration.gradle

@@ -18,6 +18,8 @@ dependencies {
 
 	testCompile "org.springframework.boot:spring-boot-starter-test"
 
+	testCompileOnly "com.google.code.findbugs:jsr305:$findbugsVersion"
+
 }
 
 processResources {

spring-geode/spring-geode.gradle

@@ -20,6 +20,8 @@ dependencies {
 		exclude group: "org.apache.logging.log4j", module: "log4j-core"
 	}
 
+	compileOnly "com.google.code.findbugs:jsr305:$findbugsVersion"
+
 	optional "org.springframework:spring-test"
 
 	testCompile "junit:junit"