Bug bash fixes to Azure Arc PostgreSQL (#20568)

* Added username field to PG and removed defaultvalue for port

* Disabled system username for miaa. Added username to pg create notebook.

* Block system for pg username

* Remove sql username from pg create

* Add service type

* bump version for preview

* Add dev use label

* Changed postgres icon

* Fixed PG create page not displaying. Wrong type

* Fixed service type

* changed naming for admin usernames sql and pg

* sql and pg dev use fix

* Move port under service type and make storage class not required

* Fixed regex to include things like sa1 system1

* Made storage class params optional

* Added placeholder text and changed PG admin username label

* Remove backups

* Removed postgres hardcoded username in connectionstring

* Remove more postgres username hardcoded

Co-authored-by: Candice Ye <canye@microsoft.com>

extensions/arc/package.nls.json

@@ -104,8 +104,10 @@
 	"arc.sql.instance.retention.policy.title": "SQL Instance Backup Retention Policy",
 	"arc.azure.section.title": "Azure information",
 	"arc.sql.instance.name": "Instance name",
-	"arc.sql.username": "Username",
-	"arc.sql.invalid.username": "sa username is disabled, please choose another username",
+	"arc.sql.instance.name.placeholder": "Enter instance name",
+	"arc.sql.username": "Managed Instance admin login",
+	"arc.sql.username.placeholder": "Enter admin name",
+	"arc.sql.invalid.username": "That username is disabled; please choose another username.",
 	"arc.sql.invalid.instance.name": "Instance name must consist of lower case alphanumeric characters or '-', start with a letter, end with an alphanumeric character, and be 13 characters or fewer in length.",
 	"arc.storage-class.dc.label": "Storage Class",
 	"arc.sql.storage-class.dc.description": "The storage class to be used for all data and logs persistent volumes for all data controller pods that require them.",
@@ -176,12 +178,12 @@
 	"arc.sql.service.tier.label": "Service Tier",
 	"arc.sql.service.tier.description": "Select from the latest vCore service tiers available for SQL Managed Instance - Azure Arc including General Purpose and Business Critical.",
 	"arc.sql.dev.use.label": "For development use only",
+	"arc.sql.dev.use.description": "Check the box to indicate this instance will be used for development or testing purposes only. This instance will not be billed.",
 	"arc.sql.license.type.label": "I already have a SQL Server License",
 	"arc.sql.license.type.description": "Apply the Azure Hybrid Benefit if you already own a SQL Server License",
 	"arc.sql.pitr.description": "Point in time restore",
 	"arc.sql.retention.days.label": "Point in time retention (days)",
 	"arc.sql.retention.days.description": "Specify how long you want to keep your point-in-time backups.",
-	"arc.sql.dev.use.description": "Check the box to indicate this instance will be used for development or testing purposes only. This instance will not be billed.",
 	"arc.postgres.storage-class.backups.description": "The storage class to be used for backup persistent volumes",
 	"arc.password": "Password",
 	"arc.confirm.password": "Confirm password",
@@ -195,6 +197,7 @@
 	"arc.postgres.settings.resource.compute.config.title": "Compute Configuration",
 	"arc.postgres.settings.storage.title": "Storage settings",
 	"arc.postgres.server.name": "Server name",
+	"arc.postgres.server.name.placeholder": "Enter server name",
 	"arc.postgres.server.name.validation.description": "Server name must consist of lower case alphanumeric characters or '-', start with a letter, end with an alphanumeric character, and be 11 characters or fewer in length.",
 	"arc.postgres.server.port": "Port",
 	"arc.postgres.server.engine.version": "Engine Version",
@@ -214,6 +217,12 @@
 	"arc.postgres.server.memory.request.description": "The memory request of the Postgres instance on the coordinator node in GB.",
 	"arc.postgres.server.memory.limit.label": "Memory limit (GB)",
 	"arc.postgres.server.memory.limit.description": "The memory limit of the Postgres instance on the coordinator node in GB.",
+	"arc.postgres.server.username": "Admin username",
+	"arc.postgres.server.username.placeholder": "Enter server admin login name",
+	"arc.postgres.server.invalid.username": "That username is disabled; please choose another username.",
+	"arc.postgres.server.service.type": "Service type",
+	"arc.postgres.server.dev.use.label": "For development use only",
+	"arc.postgres.server.dev.use.description": "Check the box to indicate this instance will be used for development or testing purposes only. This instance will not be billed.",
 	"arc.agreement": "I accept {0} and {1}.",
 	"arc.agreement.sql.terms.conditions": "Azure SQL managed instance - Azure Arc terms and conditions",
 	"arc.agreement.postgres.terms.conditions": "PostgreSQL Server - Azure Arc terms and conditions",