add unet without crop

add eval for unet++

add multi configs

add mask2img

From: @anancds
Reviewed-by: @cristoval,@xsmq
Signed-off-by: @cristoval

From: @anancds
Reviewed-by: 
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From: @wanyiming
Reviewed-by: 
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From: @huaweib
Reviewed-by: @zhoufeng54,@chujinjin
Signed-off-by: @chujinjin

From: @cathwong
Reviewed-by: 
Signed-off-by:

From: @c_34
Reviewed-by: @liangchenghui,@guoqi1024
Signed-off-by: @guoqi1024

Signed-off-by: zhoufeng <zhoufeng54@huawei.com>

From: @tom__chen
Reviewed-by: 
Signed-off-by:

From: @jiangzg001
Reviewed-by: @c_34,@linqingke
Signed-off-by: @c_34

From: @lianliguang
Reviewed-by: 
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From: @jiangzg001
Reviewed-by: 
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From: @chenfei52
Reviewed-by: @ginfung,@zh_qh
Signed-off-by: @zh_qh

plus UTs

From: @mhmotallebi
Reviewed-by: @nsyca,@robingrosman
Signed-off-by: @robingrosman

From: @TFbunny
Reviewed-by: @tom__chen
Signed-off-by:

From: @mhmotallebi
Reviewed-by: 
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From: @ezphlow
Reviewed-by: 
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From: @hwhewei
Reviewed-by: @zh_qh,@ginfung
Signed-off-by: @zh_qh

From: @ling_qiao_min
Reviewed-by: 
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From: @yuan_shen_zhou
Reviewed-by: 
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From: @wangrao124
Reviewed-by: 
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From: @c_34
Reviewed-by: @wuxuejian,@guoqi1024
Signed-off-by: @wuxuejian

From: @jiangzg001
Reviewed-by: @c_34,@wuxuejian
Signed-off-by: @c_34

From: @zh_qh
Reviewed-by: @ginfung,@hwhewei
Signed-off-by: @ginfung

From: @liangzhibo
Reviewed-by: 
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From: @ginfung
Reviewed-by: 
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From: @zhangbuxue
Reviewed-by: 
Signed-off-by: