convert all underscore fields to camel case

[headyj]

Fixing issue #119

[papineni87]

Looks like acceptance test is failing for this change

BIGIP_USER=admin BIGIP_PASSWORD=xxxxx BIGIP_HOST=10.145.69.41 TF_ACC=1 go test ./bigip -v -run=TestAccBigipLtmPolicy_create
--- FAIL: TestAccBigipLtmPolicy_create (0.87s)
testing.go:569: Step 0 error: errors during apply:

    Error: 010716de:3: Policy '/Common/Drafts/test-policy', rule 'rule6'; target 'forward' action 'select' does not support parameter of type 'name'.
    
      on /tmp/tf-test888880187/main.tf line 23:
      (source code not available)
    
    
    
    Error: 010716de:3: Policy '/Common/Drafts/http_to_https_redirect', rule 'http_to_https_redirect_rule'; target 'http-reply' action 'redirect' does not support parameter of type 'name'.
    
      on /tmp/tf-test888880187/main.tf line 39:
      (source code not available)

May be we should not convert all parameters to camel case, we should convert only specific parameters as defined in policy structure.

Can you check it once.

[thorhs]

For me, leaving out tm_name = "20" in the test policies, in bigip/resource_bigip_ltm_policy_test.go makes this work. Looking at the JSON that is being sent over to the F5 box, it seems that tm_name is being ignored in the master branch, but being converted to tmName in this new version.

What I suppose is happening is that there is no Tm_name in the F5 data structure, so it is being silently ignored. Below is an example of the failing JSON, when run using this PR:

{
    "controls": [
        "forwarding"
    ],
    "name": "Drafts/http_to_https_redirect",
    "publishedCopy": "",
    "requires": [
        "http"
    ],
    "rulesReference": {
        "items": [
            {
                "actionsReference": {
                    "items": [
                        {
                            "httpReply": true,
                            "location": "tcl:https://[HTTP::host][HTTP::uri]",
                            "name": "0",
                            "redirect": true,
                            "tmName": "20"
                        }
                    ]
                },
                "conditionsReference": {},
                "name": "http_to_https_redirect_rule",
                "ordinal": 0
            }
        ]
    },
    "strategy": "/Common/first-match"
}

And here is the JSON from the master branch version of the code:

{
    "controls": [
        "forwarding"
    ],
    "name": "Drafts/http_to_https_redirect",
    "publishedCopy": "",
    "requires": [
        "http"
    ],
    "rulesReference": {
        "items": [
            {
                "actionsReference": {
                    "items": [
                        {
                            "httpReply": true,
                            "location": "tcl:https://[HTTP::host][HTTP::uri]",
                            "name": "0",
                            "redirect": true
                        }
                    ]
                },
                "conditionsReference": {},
                "name": "http_to_https_redirect_rule",
                "ordinal": 0
            }
        ]
    },
    "strategy": "/Common/first-match"
}

As you can see, there is no tm_name being sent over the wire when using the master branch.

Removing the tm_name from the test case makes the tests run successfully again.