fix: make resources names lowercase (#1755)

Signed-off-by: AhmedGrati <ahmedgrati1999@gmail.com>

script/test/fixtures/resources-lowercase/docker-compose.yaml

@@ -0,0 +1,6 @@
+version: '3'
+services:
+  NGINX:
+    image: nginx:latest
+    ports:
+    - 80:80

script/test/fixtures/resources-lowercase/output-k8s.yaml

@@ -0,0 +1,47 @@
+---
+apiVersion: v1
+kind: Service
+metadata:
+  creationTimestamp: null
+  labels:
+    io.kompose.service: nginx
+  name: nginx
+spec:
+  ports:
+    - name: "80"
+      port: 80
+      targetPort: 80
+  selector:
+    io.kompose.service: nginx
+
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  creationTimestamp: null
+  labels:
+    io.kompose.service: nginx
+  name: nginx
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      io.kompose.service: nginx
+  strategy: {}
+  template:
+    metadata:
+      creationTimestamp: null
+      labels:
+        io.kompose.network/resources-lowercase-default: "true"
+        io.kompose.service: nginx
+    spec:
+      containers:
+        - image: nginx:latest
+          name: nginx
+          ports:
+            - containerPort: 80
+              hostPort: 80
+              protocol: TCP
+          resources: {}
+      restartPolicy: Always
+

script/test/fixtures/resources-lowercase/output-os.yaml

@@ -0,0 +1,80 @@
+---
+apiVersion: v1
+kind: Service
+metadata:
+  creationTimestamp: null
+  labels:
+    io.kompose.service: nginx
+  name: nginx
+spec:
+  ports:
+    - name: "80"
+      port: 80
+      targetPort: 80
+  selector:
+    io.kompose.service: nginx
+
+---
+apiVersion: apps.openshift.io/v1
+kind: DeploymentConfig
+metadata:
+  creationTimestamp: null
+  labels:
+    io.kompose.service: nginx
+  name: nginx
+spec:
+  replicas: 1
+  selector:
+    io.kompose.service: nginx
+  strategy:
+    resources: {}
+  template:
+    metadata:
+      creationTimestamp: null
+      labels:
+        io.kompose.network/resources-lowercase-default: "true"
+        io.kompose.service: nginx
+    spec:
+      containers:
+        - image: ' '
+          name: nginx
+          ports:
+            - containerPort: 80
+              hostPort: 80
+              protocol: TCP
+          resources: {}
+      restartPolicy: Always
+  test: false
+  triggers:
+    - type: ConfigChange
+    - imageChangeParams:
+        automatic: true
+        containerNames:
+          - nginx
+        from:
+          kind: ImageStreamTag
+          name: nginx:latest
+      type: ImageChange
+
+---
+apiVersion: image.openshift.io/v1
+kind: ImageStream
+metadata:
+  creationTimestamp: null
+  labels:
+    io.kompose.service: nginx
+  name: nginx
+spec:
+  lookupPolicy:
+    local: false
+  tags:
+    - annotations: null
+      from:
+        kind: DockerImage
+        name: nginx:latest
+      generation: null
+      importPolicy: {}
+      name: latest
+      referencePolicy:
+        type: ""
+