Standardizes loadgen behavior for Istio mTLS=STRICT (#279)

* Adds liveness probe annotation, moves loadgen initcontainer into main

* cleanup

* cleanup

* updated wrong manifests

* respond to comments

release/kubernetes-manifests.yaml

@@ -450,9 +450,9 @@ spec:
       initContainers:
       - name: wait-frontend
         image: alpine:3.6
-        command: ['sh', '-c', 'set -x;  apk add --no-cache curl && 
-          until timeout -t 2 curl -f "http://${FRONTEND_ADDR}"; do 
-            echo "waiting for http://${FRONTEND_ADDR}"; 
+        command: ['sh', '-c', 'set -x;  apk add --no-cache curl &&
+          until timeout -t 2 curl -f "http://${FRONTEND_ADDR}"; do
+            echo "waiting for http://${FRONTEND_ADDR}";
             sleep 2;
           done;']
         env:
@@ -683,4 +683,4 @@ spec:
   - name: grpc
     port: 9555
     targetPort: 9555
----
+---