Fixed prepare.sh and other small fixes

List of fixes:
- Use -g option to set ext gw info for heat-router in prepare.sh
- Fixed -H option in prepare.sh
- Fixed default working directory in prepare.sh
- Use admin_username from env vars in prepare.sh
- Set additional quotas for cvp.project
- Use mirantis busybox image from mirantis registry
- Fixed FIXED_NET variable in rally templates

Related-PROD: PROD-37187
Change-Id: I3d3ea6a520cf1677aabfa356bc40c19ae04822b4
diff --git a/k8s/rally-files/k8s-mos-scn-i1.yaml b/k8s/rally-files/k8s-mos-scn-i1.yaml
index efe3252..1394958 100644
--- a/k8s/rally-files/k8s-mos-scn-i1.yaml
+++ b/k8s/rally-files/k8s-mos-scn-i1.yaml
@@ -1,4 +1,4 @@
-{% set image_box = "busybox" %}
+{% set image_box = "mirantis.azurecr.io/general/external/e2e-test-images/registry.k8s.io/e2e-test-images/busybox:1.29-4" %}
 {% set image_pause = "mirantis.azurecr.io/general/external/pause:3.1" %}
 {% set image_cirros = "virtlet/download.cirros-cloud.net/0.6.2/cirros-0.6.2-x86_64-disk.img" %}
 {% set concurrency = 1 %}
diff --git a/k8s/rally-files/k8s-mos-scn-i100c5.yaml b/k8s/rally-files/k8s-mos-scn-i100c5.yaml
index c4ad19c..57ac0ba 100644
--- a/k8s/rally-files/k8s-mos-scn-i100c5.yaml
+++ b/k8s/rally-files/k8s-mos-scn-i100c5.yaml
@@ -1,5 +1,4 @@
-{% set image_box ="127.0.0.1:44301/stacklight/busybox:1.30" %}
-{% set image_box = "busybox" %}
+{% set image_box ="mirantis.azurecr.io/general/external/e2e-test-images/registry.k8s.io/e2e-test-images/busybox:1.29-4" %}
 {% set image_pause = "mirantis.azurecr.io/general/external/pause:3.1" %}
 {% set image_cirros = "virtlet/download.cirros-cloud.net/0.6.2/cirros-0.6.2-x86_64-disk.img" %}
 {% set concurrency = 5 %}
diff --git a/k8s/rally-files/openstack-mos-scn-i1-static-users.json b/k8s/rally-files/openstack-mos-scn-i1-static-users.json
index 23748c1..200bcd8 100644
--- a/k8s/rally-files/openstack-mos-scn-i1-static-users.json
+++ b/k8s/rally-files/openstack-mos-scn-i1-static-users.json
@@ -8,7 +8,7 @@
 {% set tenants = 1 %}
 {% set rbd_image = "https://download.cirros-cloud.net/0.6.2/cirros-0.6.2-x86_64-disk.img" %}
 {% set heat_template = "/rally/rally-files/default.yaml.template" %}
-{% set fixed_net = "id" %}
+{% set fixed_net = "${FIXED_NET}" %}
 
 {
   "KeystoneBasic.authenticate_user_and_validate_token": [
diff --git a/k8s/rally-files/openstack-mos-scn-i100-static-users.json b/k8s/rally-files/openstack-mos-scn-i100-static-users.json
index be45eb8..e0dcadb 100644
--- a/k8s/rally-files/openstack-mos-scn-i100-static-users.json
+++ b/k8s/rally-files/openstack-mos-scn-i100-static-users.json
@@ -8,7 +8,7 @@
 {% set tenants = 4 %}
 {% set rbd_image = "https://download.cirros-cloud.net/0.6.2/cirros-0.6.2-x86_64-disk.img" %}
 {% set heat_template = "/rally/rally-files/default.yaml.template" %}
-{% set fixed_net = "id" %}
+{% set fixed_net = "${FIXED_NET}" %}
 
 {
   "KeystoneBasic.authenticate_user_and_validate_token": [