Add playbbok for create & delete pre-req. in AWS

Signed-off-by: Chandan Kumar <chandan.kr404@gmail.com>

k8s/aws/k8s-installer/delete-pre-requisite.yml

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+# delete-pre-requisite.yml
+# Description:  Deleting pre requisite will delete VPC, Subnet and Internet Gateway
+
+###############################################################################################
+#Test Steps:
+
+#1. Disassociating route table fro aws.
+#2. Delete route table from aws.
+#3. Detach internet gateway from aws.
+#4. Delete internet gateway from aws.
+#4. Deleting the subnet from aws.
+#5. Deleting the VPC Network form aws.
+#6. Deleting temporary file which store the VpcId and SubnetId
+
+###############################################################################################
+
+---
+
+- hosts: localhost
+
+  vars:
+    association_id: "{{ lookup('lines', 'grep association_id /tmp/aws/id.csv | cut -d, -f5 | cut -d: -f2') }}"
+    route_table_id: "{{ lookup('lines', 'grep route_table_id /tmp/aws/id.csv | cut -d, -f4 | cut -d: -f2') }}"
+    gateway_id: "{{ lookup('lines', 'grep gateway_id /tmp/aws/id.csv | cut -d, -f3 | cut -d: -f2') }}"
+    subnet_id: "{{ lookup('lines', 'grep subnet_id /tmp/aws/id.csv | cut -d, -f2 | cut -d: -f2') }}"
+    vpc_id: "{{ lookup('lines', 'grep vpc_id /tmp/aws/id.csv | cut -d, -f1 | cut -d: -f2') }}"
+
+  tasks:
+    - block:
+        - name: Disassociating route table
+          shell: aws ec2 disassociate-route-table --association-id {{ association_id }}
+          ignore_errors: True
+      
+        - name: Deleting route table
+          shell: aws ec2 delete-route-table --route-table-id {{ route_table_id }}
+          ignore_errors: True
+      
+        - name: Detaching internet gateway
+          shell: aws ec2 detach-internet-gateway --internet-gateway-id {{ gateway_id }} --vpc-id {{ vpc_id }}
+          ignore_errors: True
+      
+        - name: Deleting Internet gateway
+          shell: aws ec2 delete-internet-gateway --internet-gateway-id {{ gateway_id }}
+          ignore_errors: True
+      
+        - name: Deleting subnet
+          shell: aws ec2 delete-subnet --subnet-id {{ subnet_id }}
+          ignore_errors: True
+      
+        - name: Deleting VPC
+          shell: aws ec2 delete-vpc --vpc-id {{ vpc_id }}
+      
+        - name: Deleting tmporary file
+          shell: rm /tmp/aws/id.csv
+
+        - name: Test Passed
+          set_fact:
+            flag: "Test Passed"
+
+    - rescue:
+        - name: Test Failed
+          set_fact:
+            flag: "Test Failed"

k8s/aws/k8s-installer/pre-requisite.yml

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+# Pre-requisite.yml
+# Description:  This will create VPC, Subnet and Internet gateway which is used in creating cluster
+
+###############################################################################################
+#Test Steps:
+
+#1. Create VPC network in aws
+#2. Modify vpc attribute
+#3. Create subnet inside the VPC Network
+#4. Create internet gateway for accessing VPC public
+#5. Attach internet gateway with VPC Network
+#6. Create route table using VpcId
+#7. Create route using route table ID
+#8. Associate route table with subnetID and route table ID
+#9. Modify subnet attribute
+#10. Create a csv file which store all Ids
+###############################################################################################
+
+---
+- hosts: localhost
+
+  vars:
+    zone: eu-west-2
+
+  tasks:
+    - block: 
+        - name: create vpc in aws
+          shell: aws ec2 create-vpc --cidr-block 10.0.0.0/16 | grep VpcId | cut -d ":" -f2 | cut -d '"' -f2
+          register: vpc_id
+     
+        - name: Modify vpc attribute
+          shell: |
+            aws ec2 modify-vpc-attribute --vpc-id {{ vpc_id.stdout }} --enable-dns-support "{\"Value\":true}"
+            aws ec2 modify-vpc-attribute --vpc-id {{ vpc_id.stdout }} --enable-dns-hostnames "{\"Value\":true}"
+      
+        - name: Creating subnet in aws
+          shell: aws ec2 create-subnet --vpc-id {{ vpc_id.stdout }} --availability-zone {{ zone }}a --cidr-block 10.0.1.0/24 | grep SubnetId |  cut -d ":" -f2 | cut -d '"' -f2
+          register: subnet_id
+      
+        - name: creating internet gateway
+          shell: aws ec2 create-internet-gateway | grep InternetGatewayId | cut -d ":" -f2 | cut -d '"' -f2
+          register: gateway_id
+      
+        - name: Attaching internet gateway to VPC
+          shell: aws ec2 attach-internet-gateway --vpc-id {{ vpc_id.stdout }} --internet-gateway-id {{ gateway_id.stdout }}
+         
+        - name: Creating route table
+          shell: aws ec2 create-route-table --vpc-id {{ vpc_id.stdout }} | grep RouteTableId | cut -d ":" -f2 | cut -d '"' -f2
+          register: route_table_id
+      
+        - name: Creating route
+          shell: aws ec2 create-route --route-table-id {{ route_table_id.stdout }} --destination-cidr-block 0.0.0.0/0 --gateway-id {{ gateway_id.stdout }}
+      
+        - name: Associating route table
+          shell: aws ec2 associate-route-table  --subnet-id {{ subnet_id.stdout }} --route-table-id {{ route_table_id.stdout }} | grep AssociationId | cut -d ":" -f2 | cut -d '"' -f2
+          register: association_id
+      
+        - name: Modifying subnet attribute
+          shell: aws ec2 modify-subnet-attribute --subnet-id {{ subnet_id.stdout }} --map-public-ip-on-launch
+      
+        - name: Create a csv file for store all Ids
+          lineinfile:
+            create: yes
+            state: present
+            path: "/tmp/aws/id.csv"
+            line: 'vpc_id:{{ vpc_id.stdout }},subnet_id:{{ subnet_id.stdout }},gateway_id:{{ gateway_id.stdout }},route_table_id:{{ route_table_id.stdout }},association_id:{{ association_id.stdout }}'
+            mode: 0755
+
+        - name: Test Passed
+          set_fact:
+            flag: "Test Passed"
+    
+    - rescue:
+        - name: Test Failed
+          set_fact:
+            flag: "Test Failed"