test(robot): add missing regression tag to test_encrypted_volume suite

Signed-off-by: Yang Chiu <yang.chiu@suse.com>

Author: yangchiu

e2e/tests/regression/test_component.robot

@@ -1,6 +1,8 @@
 *** Settings ***
 Documentation    Longhorn Component Test Cases
 
+Test Tags    regression
+
 Library    OperatingSystem
 
 Resource    ../keywords/variables.resource
@@ -12,6 +14,7 @@ Resource    ../keywords/workload.resource
 
 Test Setup    Set up test environment
 Test Teardown    Cleanup test resources
+
 *** Keywords ***
 Revert Longhorn Manager Resources
     [Documentation]    Remove CPU/Memory requests and limits for longhorn-manager

e2e/tests/regression/test_csi_snapshotter.robot

@@ -1,7 +1,7 @@
 *** Settings ***
 Documentation    CSI Volume Snapshot Test Cases
 
-Test Tags    regression csi-snapshotter
+Test Tags    regression    csi-snapshotter
 
 Resource    ../keywords/variables.resource
 Resource    ../keywords/common.resource

e2e/tests/regression/test_encrypted_volume.robot

@@ -1,7 +1,7 @@
 *** Settings ***
 Documentation    Encrypted Volume Test Cases
 
-Test Tags    encrypted    volume
+Test Tags    regression    encrypted
 
 Resource    ../keywords/variables.resource
 Resource    ../keywords/common.resource