[Bug][Server] Kill yarn application command won't be execute when kill error

[dddyszy]

**For better global communication, Please describe it in English. If you feel the description in English is not clear, then you can append description in Chinese(just for Mandarin(CN)), thx! **
Describe the bug
There are two places used 'yarn application -kill',and both of them are in try catch.So if these is some exception in OSUtils.exeCmd(cmd), kill yarn application command won't be execute

To Reproduce
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2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior
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Screenshots

Which version of Dolphin Scheduler:
-[dev][release-1.3.5]

Additional context
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Requirement or improvement

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[zhuangchong]

If no contributor claims it, I'll fix it.

[dddyszy]

If no contributor claims it, I'll fix it.

just move it out of try catch.And i think we can do something to prevent kill error,improve pstree or other methods