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Add waagent profile to azure worker role

So we are able to activate swap for indexer workers.

Related to T4415 Depends on !545 (closed)

Test Plan

bin/octo on indexer-workers adapts the swap configuration:

$ $SWH_PUPPET_ENVIRONMENT_HOME/bin/octocatalog-diff vault-worker01.euwest.azure.internal.softwareheritage.org
...
*******************************************
+ File[/etc/waagent.conf] =>
   parameters =>
     "ensure": "present",
     "group": "root",
     "mode": "0644",
     "owner": "root"
*******************************************
+ File_line[ResourceDisk.EnableSwap] =>
   parameters =>
     "ensure": "present",
     "line": "ResourceDisk.EnableSwap=y",
     "match": "^ResourceDisk.EnableSwap=n",
     "path": "/etc/waagent.conf"
*******************************************
+ File_line[ResourceDisk.SwapSizeMB] =>
   parameters =>
     "ensure": "present",
     "line": "ResourceDisk.SwapSizeMB=14336",
     "match": "^ResourceDisk.SwapSizeMB=0",
     "path": "/etc/waagent.conf"
*******************************************
*** End octocatalog-diff on indexer-worker01.euwest.azure.internal.softwareheritage.org

bin/octo on azure worker without configuration manages the waagent.conf without activating swap:

$ $SWH_PUPPET_ENVIRONMENT_HOME/bin/octocatalog-diff vault-worker01.euwest.azure.internal.softwareheritage.org
...
*******************************************
+ File[/etc/waagent.conf] =>
   parameters =>
     "ensure": "present",
     "group": "root",
     "mode": "0644",
     "owner": "root"
*******************************************
+ File_line[/etc/waagent.conf-ResourceDisk.EnableSwap] =>
   parameters =>
     "ensure": "present",
     "line": "ResourceDisk.EnableSwap=n",
     "match": "^ResourceDisk\\.EnableSwap=",
     "path": "/etc/waagent.conf"
*******************************************
+ File_line[/etc/waagent.conf-ResourceDisk.SwapSizeMB] =>
   parameters =>
     "ensure": "present",
     "line": "ResourceDisk.SwapSizeMB=0",
     "match": "^ResourceDisk\\.SwapSizeMB=",
     "path": "/etc/waagent.conf"
*******************************************
*** End octocatalog-diff on vault-worker01.euwest.azure.internal.softwareheritage.org

Migrated from D8170 (view on Phabricator)

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