Zhixiong Chi c8d48e39d1 stx tool: Add the env variable CENGN_STRATEGY
Add the environment variable CENGN_STRATEGY for supporting CENGN.
Set the default value to 'cengn_first', and we also can set the value
to the other three value 'cengn', 'upstream' or 'upstream_first'.

Story: 2008862
Task: 44361

Signed-off-by: Zhixiong Chi <zhixiong.chi@windriver.com>
Change-Id: I0326da798e808dce1b6fefd49e54f54ca41e8bcd
2022-01-26 04:13:06 -05:00
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