Fixup sample ids to match devfile API spec (no spaces)

Signed-off-by: Angel Misevski <amisevsk@redhat.com>

Author: amisevsk

samples/flattened_theia-next.yaml

@@ -146,7 +146,7 @@ spec:
     ### END Contributions from Theia plugin ###
 
     commands:
-      - id: say hello
+      - id: say-hello
         exec:
           component: plugin
           commandLine: echo "Hello from $(pwd)"

samples/flattened_theia-nodejs.yaml

@@ -224,29 +224,29 @@ spec:
           component: vsx-installer
 
       # User commands
-      - id: download dependencies
+      - id: download-dependencies
         exec:
           component: nodejs
           commandLine: npm install
           workingDir: ${PROJECTS_ROOT}/project/app
-      - id: run the app
+      - id: run-the-app
         exec:
           component: nodejs
           commandLine: nodemon app.js
           workingDir: ${PROJECTS_ROOT}/project/app
-      - id: run the app (debugging enabled)
+      - id: run-the-app-(debugging-enabled)
         exec:
           component: nodejs
           commandLine: nodemon --inspect app.js
           workingDir: ${PROJECTS_ROOT}/project/app
-      - id: stop the app
+      - id: stop-the-app
         exec:
           component: nodejs
           commandLine: >-
               node_server_pids=$(pgrep -fx '.*nodemon (--inspect )?app.js' | tr "\\n" " ") &&
               echo "Stopping node server with PIDs: ${node_server_pids}" &&
               kill -15 ${node_server_pids} &>/dev/null && echo 'Done.'
-      - id: Attach remote debugger
+      - id: attach-remote-debugger
         vscodeLaunch:
           inlined: |
             {

samples/theia-next.yaml

@@ -18,7 +18,7 @@ spec:
         plugin:
           id: eclipse/che-machine-exec-plugin/nightly
     commands:
-      - id: say hello
+      - id: say-hello
         exec:
           component: plugin
           commandLine: echo "Hello from $(pwd)"

samples/theia-nodejs.yaml

@@ -33,29 +33,29 @@ spec:
           mountSources: true
     commands:
       - exec:
-          id: download dependencies
+          id: download-dependencies
           component: nodejs
           commandLine: npm install
           workingDir: ${PROJECTS_ROOT}/project/app
       - exec:
-          id: run the app
+          id: run-the-app
           component: nodejs
           commandLine: nodemon app.js
           workingDir: ${PROJECTS_ROOT}/project/app
       - exec:
-          id: run the app (debugging enabled)
+          id: run-the-app-(debugging-enabled)
           component: nodejs
           commandLine: nodemon --inspect app.js
           workingDir: ${PROJECTS_ROOT}/project/app
       - exec:
-          id: stop the app
+          id: stop-the-app
           component: nodejs
           commandLine: >-
               node_server_pids=$(pgrep -fx '.*nodemon (--inspect )?app.js' | tr "\\n" " ") &&
               echo "Stopping node server with PIDs: ${node_server_pids}" &&
               kill -15 ${node_server_pids} &>/dev/null && echo 'Done.'
       - vscodeLaunch:
-          id: Attach remote debugger
+          id: Attach-remote-debugger
           inlined: |
             {
               "version": "0.2.0",