cue files: #compute -> #up

Signed-off-by: Andrea Luzzardi <aluzzardi@gmail.com>

tests/llb/fetch-container/exist/main.cue

@@ -1,34 +1,34 @@
 package testing
 
-busybox1: #compute: [
+busybox1: #up: [
 	{
 		do:  "fetch-container"
 		ref: "busybox"
 	},
 ]
 
-busybox2: #compute: [
+busybox2: #up: [
 	{
 		do:  "fetch-container"
 		ref: "busybox:latest"
 	},
 ]
 
-busybox3: #compute: [
+busybox3: #up: [
 	{
 		do:  "fetch-container"
 		ref: "busybox:1.33-musl"
 	},
 ]
 
-busybox4: #compute: [
+busybox4: #up: [
 	{
 		do:  "fetch-container"
 		ref: "busybox@sha256:e2af53705b841ace3ab3a44998663d4251d33ee8a9acaf71b66df4ae01c3bbe7"
 	},
 ]
 
-busybox5: #compute: [
+busybox5: #up: [
 	{
 		do:  "fetch-container"
 		ref: "busybox:1.33-musl@sha256:e2af53705b841ace3ab3a44998663d4251d33ee8a9acaf71b66df4ae01c3bbe7"

tests/llb/fetch-container/invalid/main.cue

@@ -1,6 +1,6 @@
 package testing
 
-#compute: [
+#up: [
 	{
 		do: "fetch-container"
 	},

tests/llb/fetch-container/nonexistent/digest/main.cue

@@ -1,6 +1,6 @@
 package testing
 
-#compute: [
+#up: [
 	{
 		do:  "fetch-container"
 		ref: "alpine@sha256:c6c7524e2111f22a9f7577211232d89a9e68cf5b9ed4a41ba77957c9771380a5"

tests/llb/fetch-container/nonexistent/image-with-valid-digest/main.cue

@@ -2,7 +2,7 @@ package testing
 
 // XXX WATCHOUT
 // Once buildkit has pulled that digest, it will stay cached and happily succeed WHATEVER the image name then is
-#compute: [
+#up: [
 	{
 		do:  "fetch-container"
 		ref: "busyboxaaa@sha256:e2af53705b841ace3ab3a44998663d4251d33ee8a9acaf71b66df4ae01c3bbe7"

tests/llb/fetch-container/nonexistent/image/main.cue

@@ -1,6 +1,6 @@
 package testing
 
-#compute: [
+#up: [
 	{
 		do:  "fetch-container"
 		ref: "doesnotexist"

tests/llb/fetch-container/nonexistent/tag/main.cue

@@ -1,6 +1,6 @@
 package testing
 
-#compute: [
+#up: [
 	{
 		do:  "fetch-container"
 		ref: "alpine:doesnotexist"