### What changes were proposed in this pull request?
Rename remain rss related class name and filenames etc...
### Why are the changes needed?
### Does this PR introduce _any_ user-facing change?
### How was this patch tested?
Closes#1664 from AngersZhuuuu/CELEBORN-751.
Authored-by: Angerszhuuuu <angers.zhu@gmail.com>
Signed-off-by: Angerszhuuuu <angers.zhu@gmail.com>
### What changes were proposed in this pull request?
Change Celeborn Master URL from `rss://<host>:<port>` to `celeborn://<host>:<port>`
### Why are the changes needed?
Respect the project name.
### Does this PR introduce _any_ user-facing change?
Yes, migration guide is updated accordingly.
### How was this patch tested?
Pass GA.
Closes#1624 from pan3793/CELEBORN-715.
Authored-by: Cheng Pan <chengpan@apache.org>
Signed-off-by: zky.zhoukeyong <zky.zhoukeyong@alibaba-inc.com>
