Description of problem:
When an ssh key is added to an account, there is a queued pending_ops with type "UserSshKey" added to cloud_uesrs collection in datastore. This pending_ops should have been cleared when the operations have been executed successfully.

Version-Release number of selected component (if applicable):
On devenv_3758

How reproducible:
Always

Steps to Reproduce:
1. Add sshkey to an account
rhc sshkey-add default ~/.ssh/id_rsa.pub
2. Connect to datastore, and query cloud_users
db.cloud_users.findOne({"login":"jhou"})
3. Remove the ssh key
rhc sshkey-remove default 
4. Connect to datastore, and query cloud_users
db.cloud_users.findOne({"login":"jhou"})
5. Manually clear the pending_ops and query again
oo-admin-clear-pending_ops -t 0

Actual results:
After step 2:
<snip>
"pending_ops" : [
		{
			"_id" : ObjectId("522d2926c7c23db863000004"),
			"arguments" : {
				"_id" : ObjectId("522d2926c7c23db863000005"),
				"type" : "ssh-rsa",
				"name" : "default",
				"content" : "AAAAB3NzaC1yc2EAAAADAQABAAABAQDh43XWg7LERxupWx/Ym9hswfA6loRkpMi5JOfX5C49RW6M6JnpyF53u8/VFYYADN8YN+9wwUEPrUTi6LsZAheAfgw5nxc3VTqFaiHuwFP9oc8yPCgclm+vC0Fn3S2foAjHqO1+fRDYDztAciD0uBT+pWqMsMrqdTdpHvgc6U6tYdKRqKCwNjo4K2bueq3MUMOPdxJp1SvrVJK0I+BNhG4iSaGFt++2dYr2X389kQ+6MNYpJpOuqXC734wWm27CQLvYtWRr3QXfKSV3HnybdYZPc/ffV7xE6MLMkbznBnCgdM8b8AvB41xMz5OvnyGf8+tGDrtKN+qL2+pLBPgZbxoF",
				"_type" : "UserSshKey"
			},
			"completed_domain_ids" : [ ],
			"created_at" : ISODate("2013-09-09T01:49:26.196Z"),
			"on_completion_method" : null,
			"on_domain_ids" : [
				ObjectId("522d291fc7c23db863000003")
			],
			"op_type" : "add_ssh_key",
			"state" : "queued",
			"updated_at" : ISODate("2013-09-09T01:49:26.197Z")
		},
</snip>

Aftter step 4:
<snip>
{
			"_id" : ObjectId("522d33f0c7c23db86300009b"),
			"arguments" : {
				"_id" : ObjectId("522d2926c7c23db863000005"),
				"_type" : "UserSshKey",
				"content" : "AAAAB3NzaC1yc2EAAAADAQABAAABAQDh43XWg7LERxupWx/Ym9hswfA6loRkpMi5JOfX5C49RW6M6JnpyF53u8/VFYYADN8YN+9wwUEPrUTi6LsZAheAfgw5nxc3VTqFaiHuwFP9oc8yPCgclm+vC0Fn3S2foAjHqO1+fRDYDztAciD0uBT+pWqMsMrqdTdpHvgc6U6tYdKRqKCwNjo4K2bueq3MUMOPdxJp1SvrVJK0I+BNhG4iSaGFt++2dYr2X389kQ+6MNYpJpOuqXC734wWm27CQLvYtWRr3QXfKSV3HnybdYZPc/ffV7xE6MLMkbznBnCgdM8b8AvB41xMz5OvnyGf8+tGDrtKN+qL2+pLBPgZbxoF",
				"name" : "default",
				"type" : "ssh-rsa"
			},
			"completed_domain_ids" : [ ],
			"created_at" : ISODate("2013-09-09T02:35:28.448Z"),
			"on_completion_method" : null,
			"on_domain_ids" : [
				ObjectId("522d291fc7c23db863000003")
			],
			"op_type" : "delete_ssh_key",
			"state" : "queued",
			"updated_at" : ISODate("2013-09-09T02:35:28.450Z")

</snip>

After step 5:
[root@ip-10-147-219-9 ~]# oo-admin-clear-pending-ops -t 0
Failed to clear op for user (chunchen) - #<PendingUserOps _id: 522d3064c7c23db863000026, _type: nil, created_at: 2013-09-09 02:20:20 UTC, updated_at: 2013-09-09 02:20:20 UTC, op_type: :add_ssh_key, state: "queued", arguments: {"_id"=>"522d3064c7c23db863000027", "type"=>"ssh-rsa", "name"=>"chunchenWin7x64P", "content"=>"AAAAB3NzaC1yc2EAAAABIwAAAQEA1D+z8HNYsqJmp1zvU7jBsAifkN19vC30p3VbNW+sLlck7YzM9C7057Dby0vN0nczfX6CMw6oXQSTL+qz3uInoMKtuuB61qL91cUGAvGirKqr2F36i/Ksg0gqgwpumQdlCdWq7PpI3zENNtnzisqFWBIyX7z1IgJNAYOXKa20qHy2BWKHPzM27Ffi3Hfa7z75rQtO3A4yGLjn2nCKfC9G1eiVu4a4cEmzTRYyNqHd28lZ17H09IAMW49fAR9mn/WQVh3RTINkPjVsul4y6PH3X0GMnsJjZkdyWVa1aPPXDV02EN8jonQyF1sjst7TlRV6n9fmGBuEs9wCYaRElicgrQ==", "_type"=>"UserSshKey"}, on_domain_ids: ["522d2a16c7c23db863000024"], completed_domain_ids: [], on_completion_method: nil> 
Failed to clear op for user (jhou) - #<PendingUserOps _id: 522d2926c7c23db863000004, _type: nil, created_at: 2013-09-09 01:49:26 UTC, updated_at: 2013-09-09 01:49:26 UTC, op_type: :add_ssh_key, state: "queued", arguments: {"_id"=>"522d2926c7c23db863000005", "type"=>"ssh-rsa", "name"=>"default", "content"=>"AAAAB3NzaC1yc2EAAAADAQABAAABAQDh43XWg7LERxupWx/Ym9hswfA6loRkpMi5JOfX5C49RW6M6JnpyF53u8/VFYYADN8YN+9wwUEPrUTi6LsZAheAfgw5nxc3VTqFaiHuwFP9oc8yPCgclm+vC0Fn3S2foAjHqO1+fRDYDztAciD0uBT+pWqMsMrqdTdpHvgc6U6tYdKRqKCwNjo4K2bueq3MUMOPdxJp1SvrVJK0I+BNhG4iSaGFt++2dYr2X389kQ+6MNYpJpOuqXC734wWm27CQLvYtWRr3QXfKSV3HnybdYZPc/ffV7xE6MLMkbznBnCgdM8b8AvB41xMz5OvnyGf8+tGDrtKN+qL2+pLBPgZbxoF", "_type"=>"UserSshKey"}, on_domain_ids: ["522d291fc7c23db863000003"], completed_domain_ids: [], on_completion_method: nil> 
Failed to clear op for user (jhou) - #<PendingUserOps _id: 522d33f0c7c23db86300009b, _type: nil, created_at: 2013-09-09 02:35:28 UTC, updated_at: 2013-09-09 02:35:28 UTC, op_type: :delete_ssh_key, state: "queued", arguments: {"_id"=>"522d2926c7c23db863000005", "_type"=>"UserSshKey", "content"=>"AAAAB3NzaC1yc2EAAAADAQABAAABAQDh43XWg7LERxupWx/Ym9hswfA6loRkpMi5JOfX5C49RW6M6JnpyF53u8/VFYYADN8YN+9wwUEPrUTi6LsZAheAfgw5nxc3VTqFaiHuwFP9oc8yPCgclm+vC0Fn3S2foAjHqO1+fRDYDztAciD0uBT+pWqMsMrqdTdpHvgc6U6tYdKRqKCwNjo4K2bueq3MUMOPdxJp1SvrVJK0I+BNhG4iSaGFt++2dYr2X389kQ+6MNYpJpOuqXC734wWm27CQLvYtWRr3QXfKSV3HnybdYZPc/ffV7xE6MLMkbznBnCgdM8b8AvB41xMz5OvnyGf8+tGDrtKN+qL2+pLBPgZbxoF", "name"=>"default", "type"=>"ssh-rsa"}, on_domain_ids: ["522d291fc7c23db863000003"], completed_domain_ids: [], on_completion_method: nil> 
0 applications were cleaned up. 2 users were cleaned up. 0 domains were cleaned up.

After executing, query mongo and found the pending_ops are still there.

Expected results:
The pending_ops should be cleared when the operations are executed successfully.

Additional info: