Adding security_context flag to charms

security_context is set to false while we don't have new
container images.

Change-Id: I99cf8c1ab7446811887445d596f416f7e79574e7
Signed-off-by: sousaedu <eduardo.sousa@canonical.com>
diff --git a/installers/charm/nbi/config.yaml b/installers/charm/nbi/config.yaml
index 89e248d..a85aa70 100644
--- a/installers/charm/nbi/config.yaml
+++ b/installers/charm/nbi/config.yaml
@@ -82,9 +82,14 @@
     description: |
       If true, debug mode is activated. It means that the service will not run,
       and instead, the command for the container will be a `sleep infinity`.
+      Note: If enabled, security_context will be disabled.
     type: boolean
     default: false
   debug_pubkey:
     description: |
       Public SSH key that will be injected to the application pod.
     type: string
+  security_context:
+    description: Enables the security context of the pods
+    type: boolean
+    default: false