bug(EJ2-4032): Fixed image center align issue (origin/EJ2-4213-Master-linear)

Author: pipeline

bootstrap.scss

@@ -16,6 +16,7 @@
 @import "grid/bootstrap.scss";
 @import "h-scroll/bootstrap.scss";
 @import "input/bootstrap.scss";
+@import "linear-gauge/bootstrap.scss";
 @import "list-view/bootstrap.scss";
 @import "maskedtextbox/bootstrap.scss";
 @import "numerictextbox/bootstrap.scss";

linear-gauge/bootstrap.scss

@@ -0,0 +1 @@
+@import "ej2-lineargauge/styles/linear-gauge/bootstrap.scss";