fix(common): Remove trim from container stdin & tty fields (#340) (#341)

Signed-off-by: Kyle J Aleshire <kjaleshire@gmail.com>
Co-authored-by: Kyle J Aleshire <kjaleshire@gmail.com>

charts/library/common-test/tests/container/field_stdin_test.yaml

@@ -0,0 +1,30 @@
+---
+# yaml-language-server: $schema=https://raw.githubusercontent.com/helm-unittest/helm-unittest/main/schema/helm-testsuite.json
+suite: container stdin
+templates:
+  - common.yaml
+values:
+  - ../_values/controllers_main_default_container.yaml
+tests:
+  - it: default should pass
+    asserts:
+      - documentIndex: 0
+        isKind:
+          of: Deployment
+      - documentIndex: 0
+        notExists:
+          path: spec.template.spec.containers[0].stdin
+
+  - it: custom stdin should pass
+    set:
+      controllers.main.containers:
+        main:
+          stdin: true
+    asserts:
+      - documentIndex: 0
+        isKind:
+          of: Deployment
+      - documentIndex: 0
+        equal:
+          path: spec.template.spec.containers[0].stdin
+          value: true