Prevent Gradle from pulling in groovy-all with the remote shell starter

Sadly, Gradle handle's exclusions differently to Maven even when it's
processing a Maven pom.

In this case groovy-all is pulled in via org.crashub:crash.shell where
we've excluded it. This is enough to prevent Maven from pulling in
groovy-all when you depend on the remote shell starter.
org.crashub:crash.shell is also pulled in as a transitive dependency
of a number of other dependencies and Gradle requires each of these
to also exclude groovy-all for it to actually be excluded.

This commit adds the additional exclusions that are required to make
Gradle's behaviour sane.

Fixes gh-2257

spring-boot-starters/spring-boot-starter-remote-shell/pom.xml

@@ -47,6 +47,12 @@
 		<dependency>
 			<groupId>org.crashub</groupId>
 			<artifactId>crash.connectors.ssh</artifactId>
+			<exclusions>
+				<exclusion>
+					<groupId>org.codehaus.groovy</groupId>
+					<artifactId>groovy-all</artifactId>
+				</exclusion>
+			</exclusions>
 		</dependency>
 		<dependency>
 			<groupId>org.crashub</groupId>
@@ -75,15 +81,31 @@
 					<artifactId>spring-web</artifactId>
 					<groupId>org.springframework</groupId>
 				</exclusion>
+				<exclusion>
+					<groupId>org.codehaus.groovy</groupId>
+					<artifactId>groovy-all</artifactId>
+				</exclusion>
 			</exclusions>
 		</dependency>
 		<dependency>
 			<groupId>org.crashub</groupId>
 			<artifactId>crash.plugins.cron</artifactId>
+			<exclusions>
+				<exclusion>
+					<groupId>org.codehaus.groovy</groupId>
+					<artifactId>groovy-all</artifactId>
+				</exclusion>
+			</exclusions>
 		</dependency>
 		<dependency>
 			<groupId>org.crashub</groupId>
 			<artifactId>crash.plugins.mail</artifactId>
+			<exclusions>
+				<exclusion>
+					<groupId>org.codehaus.groovy</groupId>
+					<artifactId>groovy-all</artifactId>
+				</exclusion>
+			</exclusions>
 		</dependency>
 		<dependency>
 			<groupId>org.crashub</groupId>