Set up domain-registry proxy in Crash environment

- Created configs for Proxy server, GKE, and terraform
- Created sans_list file for use with tarsier client
- Updated allowedClients in registry server

TODO: Update dr-bashrc to support crash environment

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=236659249

java/google/registry/proxy/ProxyConfig.java

@@ -29,6 +29,7 @@ public class ProxyConfig {
     SANDBOX,
     SANDBOX_CANARY,
     ALPHA,
+    CRASH,
     LOCAL,
   }
 

java/google/registry/proxy/config/proxy-config-crash.yaml

@@ -0,0 +1 @@
+# Add environment-specific proxy configuration here.

java/google/registry/proxy/kubernetes/proxy-deployment-crash.yaml

@@ -0,0 +1,54 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  namespace: default
+  name: proxy-deployment
+  labels:
+    app: proxy
+spec:
+  replicas: 3
+  selector:
+    matchLabels:
+      app: proxy
+  template:
+    metadata:
+      labels:
+        app: proxy
+    spec:
+      containers:
+      - name: proxy
+        image: gcr.io/GCP_PROJECT/IMAGE_NAME:bazel
+        ports:
+        - containerPort: 30000
+          name: health-check
+        - containerPort: 30001
+          name: whois
+        - containerPort: 30002
+          name: epp
+        - containerPort: 30010
+          name: http-whois
+        - containerPort: 30011
+          name: https-whois
+        readinessProbe:
+          tcpSocket:
+            port: health-check
+          initialDelaySeconds: 5
+          periodSeconds: 10
+        livenessProbe:
+          tcpSocket:
+            port: health-check
+          initialDelaySeconds: 15
+          periodSeconds: 20
+        imagePullPolicy: Always
+        args: ["--env", "crash", "--log"]
+        env:
+        - name: POD_ID
+          valueFrom:
+            fieldRef:
+              fieldPath: metadata.name
+        - name: NAMESPACE_ID
+          valueFrom:
+            fieldRef:
+              fieldPath: metadata.namespace
+        - name: CONTAINER_NAME
+          value: proxy