Merge lock/pause server tests between v2 and v2.1

Currently v2 and v2.1 have separate functional tests and their
corresponding sample files. As v2 and v2.1 are supposed to be identical,
there is overhead to maintain two set of functional tests and sample files.
We can have one set of tests which can run for both v2 and v2.1.

This commit merges servers actions lock/unlock, pause/unpause server
functional tests.

In V2.1 os-access-ip is separate plugin where in v2 it was mixed in server
plugin itself. So os-access-ip extension is enabled to run
merged functional tests for both v2 and v2.1.

Change-Id: I7e6c9d414959019eb6d29b2e87e1d8104c801903

doc/api_samples/os-admin-actions/admin-actions-lock-server.json

@@ -1,3 +0,0 @@
-{
-    "lock": null
-}

doc/api_samples/os-admin-actions/admin-actions-pause.json

@@ -1,3 +0,0 @@
-{
-    "pause": null
-}

doc/api_samples/os-admin-actions/admin-actions-unlock-server.json

@@ -1,3 +0,0 @@
-{
-    "unlock": null
-}

doc/api_samples/os-admin-actions/admin-actions-unlock.json

@@ -1,3 +0,0 @@
-{
-    "unlock": null
-}

doc/api_samples/os-admin-actions/admin-actions-unpause.json

@@ -1,3 +0,0 @@
-{
-    "unpause": null
-}