[feature] Adapt new version of Doris & Fix issue of excute shell timeout exception

[lxixi01]

Simply fix these problems and expect a more functional version.

Proposed changes

Issue Number: close #xxx

Problem Summary:

1.The new version doris be's pidname is doris_be.
2.Execute download_doris.sh expend more than 1 minute.

Checklist(Required)

1. Does it affect the original behavior: (Yes/No/I Don't know) Yes
2. Has unit tests been added: (Yes/No/No Need) No Need
3. Has document been added or modified: (Yes/No/No Need) Yes
4. Does it need to update dependencies: (Yes/No) No
5. Are there any changes that cannot be rolled back: (Yes/No) No

Further comments