Update Bearer replacement to be case insensitive.

Author: owenconti

src/execute/swagger2/build-request.js

@@ -84,7 +84,7 @@ export function applySecurities({request, securities = {}, operation = {}, spec}
           }
         }
         else if (type === 'oauth2' && accessToken) {
-          tokenType = (!tokenType || tokenType === 'bearer') ? 'Bearer' : tokenType
+          tokenType = (!tokenType || tokenType.toLowerCase() === 'bearer') ? 'Bearer' : tokenType
           result.headers.authorization = `${tokenType} ${accessToken}`
         }
       }

test/index-authorizations.js

@@ -175,7 +175,7 @@ describe('(instance) #execute', function () {
     })
   })
 
-  it('should uppercase the `bearer` token_type', function () {
+  it('should replace any occurrence of `bearer` with `Bearer`', function () {
     const spec = {
       securityDefinitions: {
         testBearer: {
@@ -195,7 +195,7 @@ describe('(instance) #execute', function () {
     const authorizations = {
       testBearer: {
         token: {
-          token_type: 'bearer',
+          token_type: 'BeArEr',
           access_token: 'one two'
         }
       }