Revamp the components example

Standardize on `patchesStrategicMerge` and `patchesJSON6902` instead of
`patches` in kustomization files.

Also, add example commands to create local input files for existing
SecretGenerators.

Signed-off-by: Ioannis Androulidakis <ioannis@arrikto.com>

examples/components.md

@@ -127,10 +127,10 @@ secretGenerator:
       - site_key.txt
       - secret_key.txt
 
-patches:
+patchesStrategicMerge:
   - configmap.yaml
 
-patches:
+patchesJson6902:
 - target:
     group: apps
     version: v1
@@ -182,6 +182,23 @@ data:
 EOF
 ```
 
+Create local input files for external DB's password and reCAPTCHA's keys:
+
+```shell
+
+cat <<EOF >$COMMUNITY/dbpass.txt
+dbpass
+EOF
+
+cat <<EOF >$COMMUNITY/site_key.txt
+sitekey
+EOF
+
+cat <<EOF >$COMMUNITY/secret_key.txt
+secretkey
+EOF
+```
+
 Define a **enterprise** overlay that:
 
 - generates `Secrets` for LDAP's password and external DB's password
@@ -208,10 +225,10 @@ secretGenerator:
     files:
       - dbpass.txt
 
-patches:
+patchesStrategicMerge:
   - configmap.yaml
 
-patches:
+patchesJson6902:
 - target:
     group: apps
     version: v1
@@ -263,6 +280,19 @@ data:
 EOF
 ```
 
+Create local input files for LDAP's password and external DB's password:
+
+```shell
+
+cat <<EOF >$ENTERPRISE/ldappass.txt
+ldappass
+EOF
+
+cat <<EOF >$ENTERPRISE/dbpass.txt
+dbpass
+EOF
+```
+
 Define a **dev** overlay that supports all three features(ExternalDB, LDAP,
 reCAPTCHA) and conditionally enables some or all of them. In this example, we
 define a dev overlay that supports all the features, but has disabled the LDAP
@@ -296,10 +326,10 @@ secretGenerator:
       - site_key.txt
       - secret_key.txt
 
-patches:
+patchesStrategicMerge:
   - configmap.yaml
 
-patches:
+patchesJson6902:
 - target:
     group: apps
     version: v1
@@ -367,6 +397,23 @@ data:
 EOF
 ```
 
+Create local input files for external DB's password and reCAPTCHA's keys:
+
+```shell
+
+cat <<EOF >$DEV/dbpass.txt
+dbpass
+EOF
+
+cat <<EOF >$DEV/site_key.txt
+sitekey
+EOF
+
+cat <<EOF >$DEV/secret_key.txt
+secretkey
+EOF
+```
+
 The above commands result in the following structure:
 
 ```shell