[bitnami/several] Adapt READMEs and helpers to Helm 3 (#1911)

* [bitnami/several] Adapt READMEs and helpers to Helm 3

* Update _docs

bitnami/postgresql-ha/Chart.yaml

@@ -1,6 +1,6 @@
 apiVersion: v1
 name: postgresql-ha
-version: 1.4.2
+version: 1.4.3
 appVersion: 11.6.0
 description: Chart for PostgreSQL with HA architecture (using Replication Manager (repmgr) and Pgpool).
 keywords:

bitnami/postgresql-ha/README.md

@@ -9,7 +9,7 @@ This Helm chart has been developed based on [stable/postgresql](https://github.c
 
 ```
 $ helm repo add bitnami https://charts.bitnami.com/bitnami
-$ helm install bitnami/postgresql-ha
+$ helm install my-release bitnami/postgresql-ha
 ```
 
 ## Introduction
@@ -27,7 +27,7 @@ Install the PostgreSQL HA helm chart with a release name `my-release`:
 
 ```bash
 $ helm repo add bitnami https://charts.bitnami.com/bitnami
-$ helm install --name my-release bitnami/postgresql-ha
+$ helm install my-release bitnami/postgresql-ha
 ```
 
 ## Uninstalling the Chart
@@ -202,7 +202,7 @@ The following table lists the configurable parameters of the PostgreSQL HA chart
 Specify each parameter using the `--set key=value[,key=value]` argument to `helm install`. For example,
 
 ```console
-$ helm install --name my-release \
+$ helm install my-release \
     --set postgresql.password=password \
     bitnami/postgresql-ha
 ```
@@ -212,7 +212,7 @@ The above command sets the password for user `postgres` to `password`.
 Alternatively, a YAML file that specifies the values for the above parameters can be provided while installing the chart. For example,
 
 ```console
-$ helm install --name my-release -f values.yaml bitnami/postgresql-ha
+$ helm install my-release -f values.yaml bitnami/postgresql-ha
 ```
 
 ## Configuration and installation details

bitnami/postgresql-ha/templates/_helpers.tpl

@@ -727,7 +727,7 @@ postgresql-ha: LDAP
     Invalid LDAP configuration. When enabling LDAP support, the parameters "ldap.uri",
     "ldap.base", "ldap.binddn", and "ldap.bindpw" are mandatory. Please provide them:
 
-    $ helm install --name {{ .Release.Name }} bitnami/postgresql-ha \
+    $ helm install {{ .Release.Name }} bitnami/postgresql-ha \
       --set ldap.enabled=true \
       --set ldap.uri="ldap://my_ldap_server" \
       --set ldap.base="dc=example\,dc=org" \