Allow keypairs to contain a underscore
When manually creating keypairs, underscore are allowed but
when creating keypairs while instanciating an instance, it's
not allowed.  This patch solves this.
closes-bug:
id="keypair-name"
ng-model="ctrl.keypair"
ng-required="true"
- ng-pattern="/^[A-Za-z0-9 -]+$/">
+ ng-pattern="/^[A-Za-z0-9 _-]+$/">
<span class="help-block"
ng-show="(ctrl.doesKeypairExist() || wizardForm.$invalid) && wizardForm.$dirty">
{$ ctrl.keypairExistsError $}
