test: Port yaml test to mcl

test/shell/graph-exit1.mcl

@@ -0,0 +1,8 @@
+exec ["exec1", "exec2", "exec3", "exec4", "exec0",] {
+	cmd => "sleep 15s",
+}
+
+# linear chain
+Exec["exec1"] -> Exec["exec2"]
+Exec["exec2"] -> Exec["exec3"]
+Exec["exec3"] -> Exec["exec4"]

test/shell/graph-exit1.sh

@@ -5,7 +5,7 @@
 # should take 15 seconds for longest resources plus startup time to shutdown
 # we don't want the ^C to allow the rest of the graph to continue executing!
 # this is a test of mgmt exiting quickly via a fast pause after it sees a ^C
-$TIMEOUT "$MGMT" run --no-watch --no-pgp --tmp-prefix yaml --yaml graph-exit1.yaml &
+$TIMEOUT "$MGMT" run --no-watch --no-pgp --tmp-prefix lang --lang graph-exit1.mcl &
 pid=$!
 sleep 5s	# let the initial resources start to run...
 killall -SIGINT mgmt	# send ^C to exit mgmt

test/shell/graph-exit1.yaml

@@ -1,71 +0,0 @@
----
-graph: parallel
-resources:
-  exec:
-  - name: exec1
-    cmd: sleep 10s
-    shell: ''
-    timeout: 0
-    watchcmd: ''
-    watchshell: ''
-    ifcmd: ''
-    ifshell: ''
-    state: present
-  - name: exec2
-    cmd: sleep 10s
-    shell: ''
-    timeout: 0
-    watchcmd: ''
-    watchshell: ''
-    ifcmd: ''
-    ifshell: ''
-    state: present
-  - name: exec3
-    cmd: sleep 10s
-    shell: ''
-    timeout: 0
-    watchcmd: ''
-    watchshell: ''
-    ifcmd: ''
-    ifshell: ''
-    state: present
-  - name: exec4
-    cmd: sleep 10s
-    shell: ''
-    timeout: 0
-    watchcmd: ''
-    watchshell: ''
-    ifcmd: ''
-    ifshell: ''
-    state: present
-  - name: exec0
-    cmd: sleep 10s
-    shell: ''
-    timeout: 0
-    watchcmd: ''
-    watchshell: ''
-    ifcmd: ''
-    ifshell: ''
-    state: present
-edges:
-- name: e1
-  from:
-    kind: exec
-    name: exec1
-  to:
-    kind: exec
-    name: exec2
-- name: e2
-  from:
-    kind: exec
-    name: exec2
-  to:
-    kind: exec
-    name: exec3
-- name: e3
-  from:
-    kind: exec
-    name: exec3
-  to:
-    kind: exec
-    name: exec4