Pin plugins versions, add skip list, adjust tempest config

Change-Id: I00773be2183980fc2c49a35d1e394469354838bc
diff --git a/tempest/skip-list-pike.yaml b/tempest/skip-list-pike.yaml
new file mode 100644
index 0000000..111929e
--- /dev/null
+++ b/tempest/skip-list-pike.yaml
@@ -0,0 +1,4 @@
+tempest.api.compute.admin.test_server_diagnostics.ServerDiagnosticsTest.test_get_server_diagnostics[id-31ff3486-b8a0-4f56-a6c0-aab460531db3]: cannot be verified in Tempest. Works if maxmicroversion is lower 2.36.
+tempest.api.compute.admin.test_server_diagnostics.ServerDiagnosticsV248Test.test_get_server_diagnostics[id-64d0d48c-dff1-11e6-bf01-fe55135034f3]: cannot be verified in Tempest. After microversion 2.36 os-networks nova api extension used in this tests is deprecated.
+tempest.api.compute.admin.test_server_diagnostics_negative.ServerDiagnosticsNegativeV248Test.test_get_server_diagnostics_by_non_admin[id-e84e2234-60d2-42fa-8b30-e2d3049724ac,negative]: cannot be verified in Tempest. After microversion 2.36 os-networks nova api extension used in this tests is deprecated.
+tempest.api.compute.servers.test_servers.ServerShowV247Test.test_show_server[id-88b0bdb2-494c-11e7-a919-92ebcb67fe33]: cannot be verified in Tempest. After microversion 2.36 os-networks nova api extension used in this tests is deprecated.