additional example and doc around cassandra storage for reaper (#73)

Author: skhatri

README.md

@@ -179,6 +179,12 @@ The Reaper service specific configuration values are:
   Optional setting for giving username and password credentials for the used JMX connections
   in case you are using password based JMX authentication with your Cassandra clusters.
 
+    ```
+    jmxAuth:
+      username: cassandra
+      password: cassandra
+    ```
+
 * enableCrossOrigin:
 
   Optional setting which you can set to be "true", if you wish to enable the CORS headers
@@ -191,6 +197,25 @@ The Reaper service specific configuration values are:
   for each keyspace. Cluster keyspaces are monitored based on a configurable frequency,
   so that adding or removing a keyspace will result in adding / removing the corresponding scheduled repairs.
    
+* cassandra:
+   
+   Optional setting to provide cassandra store when ```storageType: cassandra```
+   The sample here shows setup using plain authentication with ssl.
+   ```
+   cassandra:
+     clusterName: "test"
+     contactPoints: ["127.0.0.1"]
+     keyspace: reaper_db
+     authProvider:
+       type: plainText
+       username: cassandra
+       password: cassandra
+     ssl:
+       type: jdk
+   ```
+   Refer to resource/cassandra-reaper-cassandra-ssl.yaml for cassandra with Auth 
+   
+   
 Notice that in the *server* section of the configuration, if you want to bind the service
 to all interfaces, use value "0.0.0.0", or just leave the *bindHost* line away completely.
 Using "*" as bind value won't work.

resource/cassandra-reaper-cassandra-ssl.yaml

@@ -0,0 +1,71 @@
+# Cassandra Reaper Configuration Example.
+# See a bit more complete example in:
+# src/test/resources/cassandra-reaper.yaml
+segmentCount: 200
+repairParallelism: DATACENTER_AWARE
+repairIntensity: 0.9
+scheduleDaysBetween: 7
+repairRunThreadCount: 15
+hangingRepairTimeoutMins: 30
+storageType: cassandra
+enableCrossOrigin: true
+incrementalRepair: false
+allowUnreachableNodes: false
+enableDynamicSeedList: true
+
+jmxPorts:
+  127.0.0.1: 7198
+  127.0.0.2: 7200
+  127.0.0.3: 7300
+  127.0.0.4: 7400
+  127.0.0.5: 7500
+  127.0.0.6: 7600
+  127.0.0.7: 7700
+  127.0.0.8: 7800
+
+jmxAuth:
+  username: cassandra
+  password: cassandra
+
+logging:
+  level: INFO
+  loggers:
+    io.dropwizard: WARN
+    org.eclipse.jetty: WARN
+  appenders:
+    - type: console
+      logFormat: "%-6level [%d] [%t] %logger{5} - %msg %n"
+
+server:
+  type: default
+  applicationConnectors:
+    - type: http
+      port: 8080
+      bindHost: 0.0.0.0
+  adminConnectors:
+    - type: http
+      port: 8082
+      bindHost: 0.0.0.0
+  requestLog:
+    appenders: []
+
+cassandra:
+  clusterName: "test"
+  contactPoints: ["127.0.0.1"]
+  keyspace: reaper_db
+  authProvider:
+    type: plainText
+    username: cassandra
+    password: cassandra
+  ssl:
+    type: jdk
+
+autoScheduling:
+  enabled: false
+  initialDelayPeriod: PT15S
+  periodBetweenPolls: PT10M
+  timeBeforeFirstSchedule: PT5M
+  scheduleSpreadPeriod: PT6H
+  excludedKeyspaces:
+    - keyspace1
+    - keyspace2