Remove container command overrides

Zuul has updated the default container commands in the images that
it builds and these overrides are no longer necessary (and in fact,
cause an error on startup).

Change-Id: Iade1e8d09e608dc41761bb4671547de0ae6efe43

k8s/zuul.yaml

diff --git a/k8s/zuul.yaml b/k8s/zuul.yaml
index 5aa2f28..38e1af3 100644
--- a/k8s/zuul.yaml
+++ b/k8s/zuul.yaml
@@ -126,9 +126,6 @@
       containers:
       - name: merger
         image: zuul/zuul-merger:latest
-        args:
-        - /usr/local/bin/zuul-merger
-        - -d
         volumeMounts:
         - name: zuul-config
           mountPath: /etc/zuul
@@ -172,9 +169,6 @@
       containers:
       - name: web
         image: zuul/zuul-web:latest
-        args:
-        - /usr/local/bin/zuul-web
-        - -d
         ports:
         - name: zuul-web
           containerPort: 9000
@@ -225,9 +219,6 @@
       containers:
       - name: executor
         image: zuul/zuul-executor:latest
-        args:
-        - /usr/local/bin/zuul-executor
-        - -d
         ports:
         - name: logs
           containerPort: 7900
@@ -292,9 +283,6 @@
       containers:
       - name: scheduler
         image: zuul/zuul-scheduler:latest
-        args:
-        - /usr/local/bin/zuul-scheduler
-        - -d
         ports:
         - name: gearman
           containerPort: 4730