add handover_2G suite, with handover.py test

Via VTY, handover two lchans of a voice call from bts0 to bts1 and back.

New scenarios/bts1-* allow selecting various types for bts1,
complementing the already existing files for selecting bts0.

Change-Id: I0b2671304165a1aaae2b386af46fbd8b098e3bd8
diff --git a/sysmocom/scenarios/bts1-nanobts.conf b/sysmocom/scenarios/bts1-nanobts.conf
new file mode 100644
index 0000000..2425b7f
--- /dev/null
+++ b/sysmocom/scenarios/bts1-nanobts.conf
@@ -0,0 +1,4 @@
+resources:
+  bts:
+  - {}
+  - type: nanobts
diff --git a/sysmocom/scenarios/bts1-oc2g.conf b/sysmocom/scenarios/bts1-oc2g.conf
new file mode 100644
index 0000000..ff45d8e
--- /dev/null
+++ b/sysmocom/scenarios/bts1-oc2g.conf
@@ -0,0 +1,4 @@
+resources:
+  bts:
+  - {}
+  - type: osmo-bts-oc2g
diff --git a/sysmocom/scenarios/bts1-octphy.conf b/sysmocom/scenarios/bts1-octphy.conf
new file mode 100644
index 0000000..2eb51d1
--- /dev/null
+++ b/sysmocom/scenarios/bts1-octphy.conf
@@ -0,0 +1,4 @@
+resources:
+  bts:
+  - {}
+  - type: osmo-bts-octphy
diff --git a/sysmocom/scenarios/bts1-sysmo.conf b/sysmocom/scenarios/bts1-sysmo.conf
new file mode 100644
index 0000000..fa466a8
--- /dev/null
+++ b/sysmocom/scenarios/bts1-sysmo.conf
@@ -0,0 +1,4 @@
+resources:
+  bts:
+  - {}
+  - type: osmo-bts-sysmo
diff --git a/sysmocom/scenarios/bts1-trx-b200.conf b/sysmocom/scenarios/bts1-trx-b200.conf
new file mode 100644
index 0000000..9927b88
--- /dev/null
+++ b/sysmocom/scenarios/bts1-trx-b200.conf
@@ -0,0 +1,5 @@
+resources:
+  bts:
+  - {}
+  - label: Ettus B200
+    type: osmo-bts-trx
diff --git a/sysmocom/scenarios/bts1-trx-lms-limenet-micro.conf b/sysmocom/scenarios/bts1-trx-lms-limenet-micro.conf
new file mode 100644
index 0000000..e0536ec
--- /dev/null
+++ b/sysmocom/scenarios/bts1-trx-lms-limenet-micro.conf
@@ -0,0 +1,5 @@
+resources:
+  bts:
+  - {}
+  - label: LimeNET-Micro
+    type: osmo-bts-trx
diff --git a/sysmocom/scenarios/bts1-trx-lms.conf b/sysmocom/scenarios/bts1-trx-lms.conf
new file mode 100644
index 0000000..df644c0
--- /dev/null
+++ b/sysmocom/scenarios/bts1-trx-lms.conf
@@ -0,0 +1,5 @@
+resources:
+  bts:
+  - {}
+  - label: LimeSDR-USB
+    type: osmo-bts-trx
diff --git a/sysmocom/scenarios/bts1-trx-sysmocell5000.conf b/sysmocom/scenarios/bts1-trx-sysmocell5000.conf
new file mode 100644
index 0000000..d5d3069
--- /dev/null
+++ b/sysmocom/scenarios/bts1-trx-sysmocell5000.conf
@@ -0,0 +1,5 @@
+resources:
+  bts:
+  - {}
+  - label: sysmoCell 5000
+    type: osmo-bts-trx
diff --git a/sysmocom/scenarios/bts1-trx-umtrx.conf b/sysmocom/scenarios/bts1-trx-umtrx.conf
new file mode 100644
index 0000000..e8504bf
--- /dev/null
+++ b/sysmocom/scenarios/bts1-trx-umtrx.conf
@@ -0,0 +1,5 @@
+resources:
+  bts:
+  - {}
+  - label: UmTRX
+    type: osmo-bts-trx