* replaced each instance of MaskedInput in PKI with CertificateCard
* modify tests for pki-generate-csr
* add test for pki-issuer-details. modify test for pki-certificate-details
* added test for pki-key-details. modified test for pki-sign-intermediate-form
* update 2 test helper files and modify test for pki-issuer-rotate-root
* update test for certificate-card-test.js, update test for the kubernetes configuration-test.js
* modify pki-action-forms-test.js to no longer look for masked input. expand test for pki-issuer-details-test.js to check for all issuer details
* change CertificateCard to show different format types (PEM, DER, nothing) depending on the value provided. update 2 test files to account for this.
* change CertificateCard arg name from @certficateValue to @data to be more inclusive of different uses of CertificateCard (i.e when used for a private key, not a certificate). add description to certificate-card.js
* change naming for attr.options.masked to attr.options.displayCard to reflect the change from MaskedInput to CertificateCard
* add changelog
* change attribute to isCertificate to better fit the title of the component CertificateCard. edit pki-certificate-details.hbs to get rid of extraneous code
