Minor organization refactor.

Partially done 06-mTLS from the traffic management documentation.

Deleted some unnecessary files.

some other minor changes

Istio/troubleshooting/README.md

@@ -0,0 +1,11 @@
+IDK put some text in thQereSQ
+
+
+
+### Start the packet capture process
+
+```shell
+$ kubectl exec -n default  "$(kubectl get pod -n default -l app1 =helloworld -o jsonpath={.items..metadata.name})" -c istio-proxy -- sudo tcpdump dst port 80  -A
+tcpdump: verbose output suppressed, use -v[v]... for full protocol decode
+listening on eth0, link-type EN10MB (Ethernet), snapshot length 262144 bytes
+```