Re-enable Postgres tests and remove MariaDB (#2370)

* Revert "Temporarily disable Postgres tests (#2367)"

This reverts commit 06be966.

* Disable mysql app from integration test

Signed-off-by: Akanksha Kumari <akanksha.kumari@veeam.com>

* Revert "Disable mysql app from integration test"

This reverts commit 7eb9ec4.

* Remove Maria DB

---------

Signed-off-by: Akanksha Kumari <akanksha.kumari@veeam.com>
Co-authored-by: Akanksha Kumari <akanksha.kumari@veeam.com>
Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>

build/integration-test.sh

@@ -26,7 +26,7 @@ TEST_TIMEOUT="30m"
 TEST_OPTIONS="-tags=integration -timeout ${TEST_TIMEOUT} -check.suitep ${DOP}"
 # Regex to match apps to run in short mode
 # Temporary disable ES test. Issue to track https://github.com/kanisterio/kanister/issues/1920
-SHORT_APPS="^MySQL$|^MongoDB$|Maria|^MSSQL$"
+SHORT_APPS="^PostgreSQL$|^MySQL$|^MongoDB$|^MSSQL$"
 # OCAPPS has all the apps that are to be tested against openshift cluster
 OC_APPS3_11="MysqlDBDepConfig$|MongoDBDepConfig$|PostgreSQLDepConfig$"
 OC_APPS4_4="MysqlDBDepConfig4_4|MongoDBDepConfig4_4|PostgreSQLDepConfig4_4"