meta-yadro: Yocto override syntax change

Convert with convert-overrides.py
Sync local.conf.sample with:
- poky/meta-poky/conf/local.conf.sample
- meta-facebook/meta-tiogapass/conf/local.conf.sample
Additional manual changes (not found by convert-overrides.py) in
- meta-yadro/meta-nicole/recipes-kernel/linux/linux-aspeed_%.bbappend
- meta-yadro/meta-nicole/recipes-phosphor/images/obmc-phosphor-image.bbappend
- meta-yadro/meta-nicole/recipes-phosphor/settings/phosphor-settings-manager_%.bbappend

Tested: image compiles.

Signed-off-by: Andrei Kartashev <a.kartashev@yadro.com>
Change-Id: I959669bad43ce09c0817b2a002e6db546fb98f7f
diff --git a/meta-yadro/meta-nicole/recipes-phosphor/flash/phosphor-software-manager_%.bbappend b/meta-yadro/meta-nicole/recipes-phosphor/flash/phosphor-software-manager_%.bbappend
index c92b1a8..0d9c1a2 100644
--- a/meta-yadro/meta-nicole/recipes-phosphor/flash/phosphor-software-manager_%.bbappend
+++ b/meta-yadro/meta-nicole/recipes-phosphor/flash/phosphor-software-manager_%.bbappend
@@ -1 +1 @@
-PACKAGECONFIG_append = " verify_signature"
+PACKAGECONFIG:append = " verify_signature"