Upgrade to Zuul 1.1

Still a release candidate (not yet GA), but seems to work, so we'll
try and update before Spring Cloud is released again.

Fixes gh-546, fixes gh-567, fixes gh-553 (probably)

pom.xml

@@ -30,7 +30,8 @@
 		<feign.version>8.10.0</feign.version>
 		<hystrix.version>1.4.16</hystrix.version>
 		<ribbon.version>2.1.0</ribbon.version>
-		<zuul.version>1.0.28</zuul.version>
+		<servo.version>0.9.4</servo.version>
+		<zuul.version>1.1.0-rc.1</zuul.version>
 		<rxjava.version>1.0.11</rxjava.version>
 		<java.version>1.7</java.version>
 		<turbine.version>1.0.0</turbine.version>
@@ -173,6 +174,11 @@
                 <type>pom</type>
                 <scope>import</scope>
 			</dependency>
+			<dependency>
+				<groupId>com.netflix.netflix-commons</groupId>
+				<artifactId>netflix-commons-util</artifactId>
+				<version>0.1.1</version>
+			</dependency>
 			<dependency>
 				<groupId>com.netflix.archaius</groupId>
 				<artifactId>archaius-core</artifactId>
@@ -209,6 +215,11 @@
 				<artifactId>jersey-apache-client4</artifactId>
 				<version>1.19</version>
 			</dependency>
+			<dependency>
+				<groupId>com.netflix.servo</groupId>
+				<artifactId>servo-core</artifactId>
+				<version>${servo.version}</version>
+			</dependency>
 			<dependency>
 				<groupId>com.netflix.eureka</groupId>
 				<artifactId>eureka-client</artifactId>