busybox-small: add sed, expr and env for uclibc-ng-test

package/busybox-small/files/busybox.config

@@ -255,10 +255,10 @@ CONFIG_CP=y
 # CONFIG_FEATURE_DU_DEFAULT_BLOCKSIZE_1K is not set
 CONFIG_ECHO=y
 CONFIG_FEATURE_FANCY_ECHO=y
-# CONFIG_ENV is not set
+CONFIG_ENV=y
 # CONFIG_EXPAND is not set
 # CONFIG_UNEXPAND is not set
-# CONFIG_EXPR is not set
+CONFIG_EXPR=y
 # CONFIG_EXPR_MATH_SUPPORT_64 is not set
 # CONFIG_FACTOR is not set
 # CONFIG_FALSE is not set
@@ -422,7 +422,7 @@ CONFIG_DEFAULT_SETFONT_DIR=""
 # CONFIG_FEATURE_DIFF_DIR is not set
 # CONFIG_ED is not set
 # CONFIG_PATCH is not set
-# CONFIG_SED is not set
+CONFIG_SED=y
 # CONFIG_VI is not set
 CONFIG_FEATURE_VI_MAX_LEN=0
 # CONFIG_FEATURE_VI_8BIT is not set