add attach iam instance profile

[brycahta]

Issue #, if available: N/A-- adding more features

Description of changes:

• Users can now attach an IAM Instance Profile to an instance at launch
  • supports both non and interactive modes
• Added unit tests and mocks for the new feature
• Updated existing unit tests because they weren't passing
• Fix minor typos

Testing:

• unit tests
• local testing on aws account
  • list instance profiles pagination works
  • selected profile is attached to the instance as expected

Output table:

Please select an IAM Profile: 
[Press enter to choose default: Do not attach IAM profile]
+--------+-----------------------------------------------------------------------------------+-----------------------+-------------------------------+
| OPTION |                                   PROFILE NAME                                    |      PROFILE ID       |         CREATION DATE         |
+--------+-----------------------------------------------------------------------------------+-----------------------+-------------------------------+
| 1.     | Admin-role-meeeep                                                                 | AIPAXP7MEEEPLUYCUJU3W | 2020-06-05 16:54:16 +0000 UTC |
+--------+-----------------------------------------------------------------------------------+-----------------------+-------------------------------+
| 2.     | eksctl-nth-eks-cluster-test-nodegroup-windows-ng-NodeInstanceProfile-F5X2XW7I0AX5 | AIPAXP7DUN6CM2C4BYPFC | 2020-07-20 20:32:31 +0000 UTC |
+--------+-----------------------------------------------------------------------------------+-----------------------+-------------------------------+
| 3.     | Instance-Profile-1                                                                | AIPAXP7DUN6CORG253IFG | 2021-01-20 14:31:28 +0000 UTC |
+--------+-----------------------------------------------------------------------------------+-----------------------+-------------------------------+
| 4.     | Instance-Profile-2                                                                | AIPAXP7DUN6CJLXGLI2M5 | 2021-01-20 14:31:51 +0000 UTC |
+--------+-----------------------------------------------------------------------------------+-----------------------+-------------------------------+
| 5.     | Instance-Profile-3                                                                | AIPAXP7DUN6CFUJT5Q6VR | 2021-01-20 14:32:14 +0000 UTC |
+--------+-----------------------------------------------------------------------------------+-----------------------+-------------------------------+
| 6.     | Instance-Profile-4                                                                | AIPAXP7DUN6CEPIBXYJQ4 | 2021-01-20 14:32:32 +0000 UTC |
+--------+-----------------------------------------------------------------------------------+-----------------------+-------------------------------+
| 7.     | Instance-Profile-5                                                                | AIPAXP7DUN6CAYUMXFVTI | 2021-01-20 14:32:53 +0000 UTC |
+--------+-----------------------------------------------------------------------------------+-----------------------+-------------------------------+
| 8.     | NodeInstanceRole                                                                  | AIPAXP7DUN6CKHHM7YPYQ | 2020-07-06 17:28:25 +0000 UTC |
+--------+-----------------------------------------------------------------------------------+-----------------------+-------------------------------+
| 9.     | Do not attach IAM profile                                                         |                       |                               |
+--------+-----------------------------------------------------------------------------------+-----------------------+-------------------------------+
Your Choice >> 5

Please confirm if you would like to launch instance with following options: 

+--------------------------------------+--------------------------+
| Region                               | us-east-1                |
+--------------------------------------+--------------------------+
| VPC                                  | vpc-d295a6a8             |
+--------------------------------------+--------------------------+
| Subnet                               | subnet-0f0fd0423d9a6183e |
+--------------------------------------+--------------------------+
| Instance Type                        | t1.micro                 |
+--------------------------------------+--------------------------+
| Image                                | ami-0be2609ba883822ec    |
+--------------------------------------+--------------------------+
| Security Group                       | sg-819314ab              |
+--------------------------------------+--------------------------+
| Keep EBS Volume(s) After Termination | false                    |
+--------------------------------------+--------------------------+
| Auto Termination Timer in Minutes    | None                     |
+--------------------------------------+--------------------------+
| EBS Volumes                          | /dev/xvda(gp2): 8 GiB    |
+--------------------------------------+--------------------------+
| IAM Instance Profile                 | Instance-Profile-3       |
+--------------------------------------+--------------------------+
[ yes / no ]
Your Choice >> yes
Options confirmed! Launching instance...
Launch Instance Success!
Instance ID: i-08e3f935e51d6891b

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[pdk27]

LGTM. Left some minor comments.

[pdk27]

LGTM!