[yugabyted] Issues when running on a public cloud instance

[rkarthik007]

1. Not binding to 0.0.0.0

We are not binding to 0.0.0.0 by default, so not able to open the UI on an install in a public cloud.

$ curl http://127.0.0.1:7200
<this is ok>

$ curl http://172.151.31.15:7200
curl: (7) Failed to connect to 172.151.31.15 port 7200: Connection refused

2. Default status being printed uses localhost

Installed yugabyted on a public cloud machine, and got the UI on a localhost ip address. Should we change this to the eth0 ip address?

ubuntu@ip-172-151-31-15:~/yugabyte-2.0.8.0$ ./bin/yugabyted start
Starting YugabyteDB...
System checks ✅
Database installed ✅
UI ready ✅

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|                                            YugabyteDB                                            |
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| Status              : Running                                                                    |
| Webserver UI        : http://127.0.0.1:7200                                                      |
| JDBC                : jdbc:postgresql://127.0.0.1:5433/yugabyte                                  |
| YSQL                : bin/ysqlsh                                                                 |
| YCQL                : bin/cqlsh                                                                  |
| Data Dir            : /home/ubuntu/yugabyte-2.0.8.0/yugabyte-data                                |
| Log Dir             : /home/ubuntu/yugabyte-2.0.8.0/yugabyte-logs                                |
| Universe UUID       : 43ed7f7e-a58c-4672-bd0b-675d14e37861                                       |
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YugabyteDB started successfully! To load a sample dataset, try 'yugabyted demo'.
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