Reformat Robot files to follow best practices

Best practices in Robot files consist in using three spaces as
separator and not using tabs. This change updates all files
and includes the checking of the format as part of
`devops-stages/stage-test.sh`. In addition, it checks that files
have no CRLF terminators.

Change-Id: Ie71c2dd92585eba3baf98df0be54f05828819ad8
Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>
diff --git a/robot-systest/lib/openstack_lib.robot b/robot-systest/lib/openstack_lib.robot
index c335963..ff02b29 100644
--- a/robot-systest/lib/openstack_lib.robot
+++ b/robot-systest/lib/openstack_lib.robot
@@ -22,7 +22,7 @@
     ${rc}   ${stdout}=   Run and Return RC and Output   openstack server show ${server_id} | grep flavor | awk 'NR>1{print $1}' RS='(' FS=')'
     log   ${stdout}
     Should Be Equal As Integers   ${rc}   ${success_return_code}
-    [Return]  ${stdout}
+    [Return]   ${stdout}
 
 
 Get Flavor Properties
@@ -32,43 +32,43 @@
     ${rc}   ${stdout}=   Run and Return RC and Output   openstack flavor show ${flavor_id} | grep properties | awk -F '|' '{print $3}'
     log   ${stdout}
     Should Be Equal As Integers   ${rc}   ${success_return_code}
-    [Return]  ${stdout}
+    [Return]   ${stdout}
 
 
 Check NS Servers In VIM
-    [Documentation]     Check if the number of servers in Openstack by filtering by NS name is as expected.
+    [Documentation]   Check if the number of servers in Openstack by filtering by NS name is as expected.
     [Arguments]   ${ns_name}   ${number}
 
     Should Not Be Empty   ${ns_name}
     ${rc}   ${stdout}=   Run and Return RC and Output   openstack server list | grep ${ns_name} | awk '{print $4}'
     log   ${stdout}
     Should Be Equal As Integers   ${rc}   ${success_return_code}
-    @{servers} =  Split String  ${stdout}
-    ${n_servers}=  Get Length  ${servers}
+    @{servers} =   Split String   ${stdout}
+    ${n_servers}=   Get Length   ${servers}
     Should Be Equal As Integers   ${number}   ${n_servers}
 
 
 Get Project Quota
-    [Documentation]     Get a field (ram, cores, ports, etc.) from quota in current project.
+    [Documentation]   Get a field (ram, cores, ports, etc.) from quota in current project.
     [Arguments]   ${field}
 
     Should Not Be Empty   ${field}
     ${rc}   ${stdout}=   Run and Return RC and Output   openstack quota show -c ${field} -f value
     log   ${stdout}
     Should Be Equal As Integers   ${rc}   ${success_return_code}
-    [Return]  ${stdout}
+    [Return]   ${stdout}
 
 
 Get Server Property
-    [Documentation]     Get a field (flavor, image, volumes_attached, etc.) from a server.
-    [Arguments]    ${server_id}   ${field}
+    [Documentation]   Get a field (flavor, image, volumes_attached, etc.) from a server.
+    [Arguments]   ${server_id}   ${field}
 
     Should Not Be Empty   ${server_id}
     Should Not Be Empty   ${field}
     ${rc}   ${stdout}=   Run and Return RC and Output   openstack server show ${server_id} -c ${field} -f value
     log   ${stdout}
     Should Be Equal As Integers   ${rc}   ${success_return_code}
-    [Return]  ${stdout}
+    [Return]   ${stdout}
 
 
 Check VM In Server Group
@@ -84,43 +84,43 @@
 
 
 Check If Volume Exists
-    [Documentation]     Checks if a volume id exists
-    [Arguments]    ${volume_id}
+    [Documentation]   Checks if a volume id exists
+    [Arguments]   ${volume_id}
 
     Should Not Be Empty   ${volume_id}
     ${rc}   ${stdout}=   Run and Return RC and Output   openstack volume list | grep ${volume_id} | wc -l
     log   ${stdout}
     Should Be Equal As Integers   ${rc}   ${success_return_code}
-    [Return]  ${stdout}
+    [Return]   ${stdout}
 
 
 Delete Volume
-    [Documentation]     Delete a volume by its identifier
-    [Arguments]    ${volume_id}
+    [Documentation]   Delete a volume by its identifier
+    [Arguments]   ${volume_id}
 
     Should Not Be Empty   ${volume_id}
     ${rc}   ${stdout}=   Run and Return RC and Output   openstack volume delete ${volume_id}
     log   ${stdout}
     Should Be Equal As Integers   ${rc}   ${success_return_code}
-    [Return]  ${stdout}
+    [Return]   ${stdout}
 
 
 Stop Server
-    [Documentation]     Stop a server
-    [Arguments]    ${server_id}
+    [Documentation]   Stop a server
+    [Arguments]   ${server_id}
 
     Should Not Be Empty   ${server_id}
     ${rc}   ${stdout}=   Run and Return RC and Output   openstack server stop ${server_id}
     log   ${stdout}
     Should Be Equal As Integers   ${rc}   ${success_return_code}
-    [Return]  ${stdout}
+    [Return]   ${stdout}
 
 Halt Server
-    [Documentation]    Reset a server
-    [Arguments]    ${server_id}
+    [Documentation]   Reset a server
+    [Arguments]   ${server_id}
 
     Should Not Be Empty   ${server_id}
     ${rc}   ${stdout}=   Run and Return RC and Output   openstack server set --state error ${server_id}
     log   ${stdout}
     Should Be Equal As Integers   ${rc}   ${success_return_code}
-    [Return]  ${stdout}
+    [Return]   ${stdout}