Adding cri reset script for resetting the states

Signed-off-by: Abhinandan Prativadi <abhi@docker.com>

hack/cri-reset.sh

@@ -0,0 +1,41 @@
+#!/bin/bash
+
+CRICTL_CLI="crictl --runtime-endpoint /var/run/cri-containerd.sock "
+
+crictl_stop_running_containers() {
+   for x in $($CRICTL_CLI ps | awk '{ print $1 }' | awk '{if(NR>1)print}') ;do    
+       $CRICTL_CLI stop $x
+   done
+}
+
+crictl_rm_stopped_containers() {
+   $CRICTL_CLI ps | awk '{ print $1 }' | awk '{if(NR>1)print}'   
+   for x in $($CRICTL_CLI ps | awk '{ print $1 }' | awk '{if(NR>1)print}') ;do
+       $CRICTL_CLI rm $x
+   done
+}
+
+crictl_stop_sandboxes() {
+   for x in $($CRICTL_CLI sandboxes | awk '{ print $1 }' | awk '{if(NR>1)print}') ;do    
+       $CRICTL_CLI stops $x
+   done
+}
+
+crictl_rm_sandboxes() {
+   for x in $($CRICTL_CLI sandboxes | awk '{ print $1 }' | awk '{if(NR>1)print}') ;do
+       $CRICTL_CLI rms $x
+   done
+}
+
+crictl_rm_images() {
+   for x in $($CRICTL_CLI images | awk '{ print $1 }' | awk '{if(NR>1)print}') ;do    
+       $CRICTL_CLI rmi $x
+   done
+}
+
+command -v crictl >/dev/null 2>&1 || { echo >&2 "crictl not installed. Install from https://github.com/kubernetes-incubator/cri-tools.  Aborting."; exit 2; }
+crictl_stop_running_containers
+crictl_rm_stopped_containers
+crictl_stop_sandboxes
+crictl_rm_sandboxes
+crictl_rm_images