[AMBARI-22966] ambari-agent fails to start (dgrinenko)

[hapylestat]

What changes were proposed in this pull request?

RM wildcard module resolving cased sudo module to be imported twice, causing circular import issue. Moving sudo import inside function will help to broke circular import chain.

How was this patch tested?

Before:

# ambari-agent start
Verifying Python version compatibility...
Using python  /usr/bin/python
Checking for previously running Ambari Agent...
Checking ambari-common dir...
Starting ambari-agent
Verifying ambari-agent process status...
ERROR: ambari-agent start failed. For more details, see /var/log/ambari-agent/ambari-agent.out:
====================
  File "/usr/lib/ambari-agent/lib/resource_management/__init__.py", line 23, in <module>
    from resource_management.libraries import *
  File "/usr/lib/ambari-agent/lib/resource_management/libraries/__init__.py", line 23, in <module>
    from resource_management.libraries.functions import *
  File "/usr/lib/ambari-agent/lib/resource_management/libraries/functions/__init__.py", line 48, in <module>
    from resource_management.libraries.functions.log_process_information import *
  File "/usr/lib/ambari-agent/lib/resource_management/libraries/functions/log_process_information.py", line 22, in <module>
    from ambari_commons.shell import shellRunner
ImportError: cannot import name shellRunner
====================
Agent out at: /var/log/ambari-agent/ambari-agent.out
Agent log at: /var/log/ambari-agent/ambari-agent.log

After:

# ambari-agent start
Verifying Python version compatibility...
Using python  /usr/bin/python
Checking for previously running Ambari Agent...
Checking ambari-common dir...
Starting ambari-agent
Verifying ambari-agent process status...
Ambari Agent successfully started
Agent PID at: /var/run/ambari-agent/ambari-agent.pid
Agent out at: /var/log/ambari-agent/ambari-agent.out
Agent log at: /var/log/ambari-agent/ambari-agent.log

[asfgit]

Refer to this link for build results (access rights to CI server needed):
https://builds.apache.org/job/Ambari-Github-PullRequest-Builder/546/
Test FAILed.
Test FAILured.

[hapylestat]

retest this please

[asfgit]

Refer to this link for build results (access rights to CI server needed):
https://builds.apache.org/job/Ambari-Github-PullRequest-Builder/552/
Test FAILed.
Test FAILured.

[hapylestat]

Ignoring test result as python tests passed. Java deadlock test have no relation to this patch