Install go binaries and git during .copr build

Fixes:

```
stdout: make srpm # from the project top level makefile
make[1]: Entering directory '/mnt/workdir-yagcubnt/microshift'
/usr/bin/bash: line 1: go: command not found
```
Signed-off-by: Miguel Angel Ajo <[email protected]>

Author: mangelajo

.copr/Makefile

@@ -13,5 +13,6 @@
 outdir ?= /tmp
 
 srpm:
+	dnf -y install golang-bin git
 	make srpm # from the project top level makefile
-	cp packaging/rpm/_rpmbuild/SRPMS/*.src.rpm $(outdir)
+	cp packaging/rpm/_rpmbuild/SRPMS/*.src.rpm $(outdir)