This fixes tests which are failing due to unavailable SKUs:
GP_Gen4_2 -> B_Gen5_1
westus -> westus2
Both changes result in lower costs to run tests as well.
Changes derived from: https://github.com/ansible/ansible/pull/45444
* essential fixes in 2.5
* one more fix
* disable try to see whats the problem
* fix indent
* try to fix msrest version
* fixed test
* undo try-except commenting out
* updated tests
* adding azure_rm_postgresqlserver
* removed semicolon placed by mistake
* updates to azure_rm_postgresqlserver
* updates to azure_rm_postgresqlserver
* updates to azure_rm_postgresqlserver
* updates to azure_rm_postgresqlserver
* updates to azure_rm_postgresqlserver
* updates to azure_rm_postgresqlserver
* updates to azure_rm_postgresqlserver
* updates to azure_rm_postgresqlserver
* Updated dependencies
